Treasure chests in sequence 11 - The Betrayal | Treasure chests AC Chronicles: China Guide

First chest is guarded by a Mongolian Scout and a shooter

CHEST 1/4 - First chest is at the beginning of the mission. Walk out of haystack and go right (deal with two guards). Chest is near two guards (one of them is a spy from optional task). You can take it without killing anyone - loot it and then hang on the edge and walk to the zone where you can't be spotted.

Second chest in the room in tower

CHEST 2/4 - Second chest is in the tower you reach by jumping on scaffoldings. It's on the highest floor on the right side. You can eliminate one guard - it's a scout from the side task. Walk behind the second guard and loot the chest when he is watching through the window.

Chest behind the first Watchtower

CHEST 3/4 - Third chest can be found after leaving first Watchtower (the one where you use reel). It's on the highest platform. A data shard is nearby.

Last chest is in the building "in depth".

CHEST 4/4 - Last chest is near the third one. After walking through the first watchtower and defeating a group of enemies on the platforms, you will walk through a collapsed beam. Climb to the top of another platform and go deep, to the building. There you will find the treasure chest.