Treasure chests in sequence 6 - The Search | Treasure chests AC Chronicles: China Guide

Chest is near the gate and it is guarded by few enemies

CHEST 1/2 - First chest can be found at the beginning of the level, after passing through the gate with guards by hiding in the crowd. After you find yourself on the right from the gate, start dropping down to lower ledges. To reach the chest, you must first go left and, sadly, deal with guards. It is best to attack them from surprise and, after collecting Scroll 7 from the chest, load last checkpoint.

Using the throwing knife will unlock access to the ledge with chest and fifth candle

CHEST 2/2 - Second chest is placed near the end of the mission. After using one of ladders in the final walk to the river don't go right (where the mission ends) but turn left. You will reach the place with twelfth Animus shard and, after collecting it, use the throwing knife on the upper rope. It will unwrap a ladder leading to the chest and fifth candle (side mission objective). In the chest you will find Scroll 8.