Go upstairs and turn left. In the courtyard destroy the fish stand  And give one of them to the merchant. 
Use Elisabeth's double jump to get to the roof and go right.  Then use the rope to slide. 
Go across the bridges till you reach the mechanism which Barbossa can activate using his sword.  As Elisabeth jump using the green bars. 
On the other side still as Elisabeth run to the right and destroy the chain that blocks the bridge.  Destroy the sealed door behind the bridge and go upstairs. 
Up activate the two mechanism simultaneously.  Run through the open passage. On the next map use the boat to get to the pier leading to the courtyard. 
In front of the bathhouse
Move towards the wheel on the wall - it is a puzzle. Using the helm pull out and hide blue or green elements,  And use the blue and green bar to turn the wheel. 
The ball needs to get on the colorful element and then remove the element using the helm. It has to get to the hole beneath.
Enter the room and destroy the seal on the door.  Move the washtubs with the clients. 
Grab the two chains on both sides of the bathhouse (closer to the entrance).  The way to Sao Feng is free now. 
Once again in front of the bathhouse
You need to recruit three people. One of them wants the pistol - give it to him (it is on the stand next to you).  Switch to the new crew member and shoot at the target in the background. 
Pick up the carrot and give it to the other character.  Switch to him and grab the golden handle to stretch the stairs. 
The gate will open and the soldiers will attack - fight them (you will not defeat all of them, because they will come back in small groups).  Go behind the gate and use the strength of Tattoo Pirate to move the bridge (the handle is above water). 
On the other side shoot at the target on the left to throw down the object (Tai has the gun).  As Tattoo Pirate move the chest to the other bank.  Put it on the green surface.
Build the cart using the destroyed chest  and move it towards the gate. 
Behind the gate you will reach a bridge with a green brick - put the rocket which is on the right on it and fire the fuse using the torch.  Stick to the wharf and fight the soldiers. You will reach the ship. To enter it you need to shoot at the target using Tai's gun.