Where did Ji Qiong finally go?

Deep in the great abyss of layered rocks. According to the information asked, it can be seen from the last letter left by Zhi Qiong: Thanks to my predecessors for opening the way for me, I will continue my adventure along the deep passage of layered rocks until I can't walk any further. Zhi Qiong, a character (npc) in the game "Genshin Impact" and its derivative works, is a newcomer adventurer of the Adventurers Association and an explorer of the layered rock deep exploration team.