How to Open the Cave Barrier of Zhang Chi City Wall

1. Log in to the game Genshin Impact first, and conduct an investigation at the top of Baojiakou semi-ring at the upper left of Zhang Chi City Wall Cave.

2. After the investigation, activate the device and unlock the entrance barrier at the entrance of the opposite mountainside.

3. After the enchantment is untied, you will get a gorgeous treasure chest and a Cangling carp in the cave.