RELIC 1/3 - VASES - KANSU BURIAL URN
Coordinates: [712594; 3416266]
Note: The secret you're looking for is located in the first room of the location Chasm Shrine (with Sacred Hall campsite). Open the box and take the relic (reward: 25 XP).
RELIC 2/3 - VASES - BAN CHIANG VASE
Coordinates: [712597; 3416263]
Note: The secret you're looking for is located in the large chamber with movable cage. Start at the entrance to the chamber - jump down and turn around. The box with the relic is located under the balcony. Open it and take the vase (reward: 25 XP).
RELIC 3/3 - VASES - SATSUMA VASE
Coordinates: [712616; 3416245]
Note: The vase you're looking for is located in the box lying on the ground next to the second campsite (Sacred Passage), the one you visits before entering final part of the monastery (reward: 500 XP).