Waiting until final trip up Mt. Sumeru so you have all the characters necessary
and triggered, plus all of the mobility makes this a bit easier.

Start by going into Inner Realm and talk to every Incarnation to activate every
quest simultaneously.

Use a Chakra Gate to go to Lhan. Go to the bell outside and to the west to start
Zubei/Kushi’s quest and then use the Chakra Gate to go to the Tower of Wisdom.
Once inside the Tower of Wisdom, talk to Angwu to begin Razmi’s quest. Leave the
Tower.

Speak to Phoebe’s children outside the tower, to the right, to begin her quest.
Then walk east to the entrance of town to find Yan’s first poster area. Walk
back to the west and just west of the Tower of Wisdom, a merchant on a carpet on
the ground will start Leilani’s quest. After that, head north to the bar up high
where Felicity the informant is. Speak to her four times to trigger the next
part of Leilani’s quest and to start three more: Kampan, Ren, and Qadira.
Finally, head to the docks on the west side of Port Maerifa to finish Leilani’s
quest. Fight and defeat the “Sea Cucumber” by speaking to Leilani. Conveniently,
you are on the Teotul to take you to the Iron Kingdom.

Walk east and speak to Mary to begin Baozhai’s quest. Keep walking east and you
will see a sparkle for Yan’s second poster location. Then you’ll have to make
your way to the Factory, making your way to the room on the northeast part of
the map before you fought the Slime Queen. That is where you fight Barbarossa
for Baozhai’s quest. Defeat him and then go back to the right in the Factory to
make your way down to the Chakra Gate in the basement of the Factory. Take it to
Tai Krung City.

Once in Tai Krung City, head west, south, and east to go to the Ocean of Milk
where you reacquired Thorani on the revisit to the city. That is where Baozhai’s
quest will be completed. Head back to the elevators to the right of the Chakra
Gate, take the elevator and then take the stairs back up to where the main
entrance is, the door that Baz was blocking before you defeated him on the
revisit. Speak to the man from Lhan that is sitting outside the home to the left
of Mara’s Den entrance to continue Zebei and Kushi’s quest. Then head to Ginseng
and Honey’s home and talk to their parents four times to start four more quests:
Naga Rider, Ginseng and Honey, Thorani, and Tungar.

Before you head back to Mara’s Den, head west into the city to find Yan’s final
poster location. Then go back to Mara’s Den through the main entrance you just
came out of. Keep going east and over the gap so you can use the elevator that
will bring you up one level. Head northeast in the tall room (the room with the
save point in the lower left corner) and start walking up the stairs. Thorani’s
quest will trigger when you come up to the Hungry Ghost. After that, just keep
walking up the stairs until you reach the dining room where Mara was back when
you first visited Tai Krung City. That is where you will fight and defeat Ren’s
witch, finishing his quest.

Head back down the stairs and back to the tall room, crossing the gap from the
top right to the top left by flying across or using your Barnacle Grip. Once you
hit the dance floor, Yan’s quest will finish up and you’ll be put back into the
tall room with Yan’s dad now next to the save point. Head back to the dance
floor and out the door to the lower left to break out of there. There’s a fork
with two paths to the west; go up and to the west to make your way out of the
city. But before you leave, make sure you go along the docks until Naga Rider’s
quest will finish up. Just defeat the enemy and he will be all done. From there
you can take the Teotul back to Port Maerifa for a brief pit stop.
Head to the Tower of Wisdom and speak to Angwu to continue on Ginseng and
Honey’s quest. From there you can take the Chakra Gate to Kaanul.

You’ll be at the very bottom of Kaanul once you go through the Chakra Gate. Head
north and out of the chamber, and then make your way west through all the
platforming sections. In the top left section of this area, there is a barrier
where you use Sky Splitter to break through and get a Ringsel. However, head
west in that room and through a couple more barriers to fight a monster for
Qadira’s quest. 

After that you can make your way to the main area of Kaanul. You’ll have to pass
through the Tlatchlibol court and Hunoch and Xiboch’s quest will start and end
right there after a fight with three big baddies. Head north toward the entrance
of Kaanul, stopping at the level below the entrance to speak with Nuna’s sister
twice, once for Nuna’s quest and once for Ginseng and Honey. After those
conversations, go to the left and speak with the bandito-looking fella’. That is
the start of Latigo’s quest. After speaking with him, you have to go back down
to where the Cihuateteo…. Harpy-looking thing… is. To the upper left is a
barrier where you can use Sky Splitter. Check out the cave and then head out of
Kaanul and to the east, going back toward the area where you first acquired
Nature’s Bloom at the dead end. On your way you’ll see a beam of light in the
ceiling. Shoot it with an arrow to continue Nuna’s quest. Then go to the right
and down, to that dead end. You’ll see a second beam of light to shoot with an
arrow and then go to the dead end to the left. You’ll fight a big monster there
to continue Ginseng and Honey’s quest. Now you can head back to the cavern where
Nuna’s quest commenced, shoot one more beam of light with an arrow, and that is
where her’s will finish.

From there, you’ll have to make your way back down to the Chakra Gate. Take it
to Ashwat and head west back home. Once you are in the town, talk with the
little Asura Child to begin Lanshi’s quest. Head just a little bit to the left
and talk with the woman to begin Zahra’s quest. After that, ignore the intense
music and keep going left to hear some more intense music, where you will find
the culmination of Tungar’s quest. Just defeat the monster and he will be all
done. Leave the town to the east and jump down toward the save point to the
southeast. Just beyond it will be an enemy to defeat for Zahra’s quest.
 
Head west from there and through some breakable walls to head toward the Almutah
Sands. Eventually when you get back to the cave where the team first met
Thorani. When you start running through the heavy winds, you’ll eventually
trigger a fight with Vasco for the end of Latigo’s quest. Keep heading west
until you come across a tunnel with the heavy downward gust. You’ll have to use
your sped-up wall jumps to get through it. There’s a Ringsel up there, but keep
heading left over the spikes and fight the Kushi-bird-looking enemy to continue
Kampan’s quest. Head back to the west toward Port Maerifa. Phoebe and Tungar
will be there and you’ll have to defeat them in a battle to finish Phoebe’s
quest.

Once you’re back in Port Maerifa, head back to Felicity at the northern bar to
continue Qadira’s quest. Then go back to the Teotul to ship over to the Iron
Kingdom.

Head east from the dock and use Kampan Corkscrew to find a person standing there
to talk to. They will direct Qadira to the factory on her quest to find her
missing brother. Before you go up there though, keep walking to the right and
talk to a citizen in a blue coat for one of three people for Kampan’s quest.
Head north and to the east, using the Kampan Corkscrew to go through the
corridor that connects the west and east parts of the kingdom. While you walk to
the right, talk to the butcher there for citizen #2 of Kampan’s quest. Then head
down and to the left where you first learned Kampan Corkscrew to find the last
citizen to finish Kampan’s quest. Unfortunately, it will move you back to the
previous area, so you’ll have to retrace your steps to get back up to the
Factory. Just outside the entrance next to the tank, a woman is standing there
to talk to for Qadira’s quest. Finally, you just have to head back to the slums
next to the house with the other tank. There is someone in a green scarf there
and Qadira’s quest finally comes to an end.

From there, head east and through the platforming sections where you followed
Kampan on the revisit. That will get you to the Chakra Gate which you will use
to get back to Lhan.

Once back at Lhan, it’s time to start climbing Mt. Sumeru once again. Stick to
the left side and use all of your mobility to start your ascent. Eventually the
air will start getting thinner and foggier. Keep going and you’ll see the giant
red beast that should be guarding Lanshi’s quest item, but it should trigger
before the fight even starts. After you finish off the monster, jump off the
cliff to the right and go through the corridors of Mt. Sumeru until you end up
in a northeastern area in that blue section of the map (keep checking your map).
The area you need contains an Ahool (bat-like creature) behind a narrow passage
where you’ll have to use Nature’s Embrace to teleport through to the other side.
Just to the right of that is a giant turtle monster that you’ll need to defeat
to continue Zebei and Kushi’s quest. 

Head back out toward the cliff you jumped down after Lanshi’s side quest. Keep
heading up and hug the left side. Eventually there will be large blue spikes to
the right and a tall wall to the left with a spike wall that you can use
Nature’s Bloom on. Keep heading up and to the left and there will be a stretch
of spikes on the floor you can ‘pogo’ across. All the way to the left, you’ll
finally finish Razmi’s quest after a fight with the spirit of her lantern. Make
your way back down to the large blue spikes and head east. Check the map and you
can see that long corridor with a quest marker. That is the next stop for
Thorani’s quest. After that, you can proceed through the rest of Mt. Sumeru
until you reach the very top, just before the end of the game. Once you learn
your new ability to be even faster and fly through the air, don’t follow Kala.
Instead, go to the right and find the final Chakra Gate, a fast travel to the
very top so you don’t have to climb Mt. Sumeru anymore.

Use the Chakra Gate and head back to Ashwat to finish up a couple of quests.
You’ll have to get back to Ashwat-proper and talk to the Asura Child and the
woman next door to it to finish the quests for Lanshi and Zahra, respectively.
Go back to the Chakra Gate outside of Ashwat and go back to Tai Krung City. Head
back up the elevator and stairs of Mara’s Den to get closer to finishing
Thorani’s quest, returning some water to the Hungry Ghost. Leave out Mara’s Den
through the entrance that Baz used to guard and talk to the same man for Zebei
and Kushi’s quest. He’ll tell you to see him at Lhan, but we’re not going there
yet. Go back to Ginseng and Honey’s home and talk to their parents two more
times, once for Ginseng and Honey and once to finish Thorani’s quest. Head to
the docks and take the Teotul back to Port Maerifa.

At Port Maerifa, head to the Tower of Wisdom and talk to Angwu one last time to
finish Ginseng and Honey’s quest.

Use the Chakra Gate there, head back to Lhan and back to the bell that was once
broken. Now it’s all fixed! And with that, the quest for Zebei and Kushi is all
done, and so are all of the quests!