All Beauty Fades Side Story Full Walkthrough and Details | Where Winds Meet

An elderly boatman is obsessed with seeking the pinnacle of engineering.
Note: You must have finished the Lost Chapter, Jinming Pool: Petalfall Banquet and the Encounter, Soaring Eagle to do this quest.

[1] Talk to the fisherman Tang Ji'an.

[2] Interact with the locked chest nearby.

[3] Give the fisherman the Explosive Device Plans from the Soaring Eagle quest.

・Echo Jade x 20
・Kaifeng Exploration x 10
・Character EXP x 1500
・Coin x 1500