
Complete the Bodhi Sea and Palace of Annals campaigns, keep both halves of the Light Jade, reach 6,000 Qinghe Exploration Points, and speak with the Sundara Land Wayfarer. Track Jianghu Legacy - Final: The Promised Light, place the Light Jade on Buddha's Light Pagoda during the Wu Hour, clear the underground route, defeat Tian Ying, and finish the escape. Yaksha Rush is awarded by the completed story quest.
Region
Halo Peak, Sundara Land, Qinghe
Quest
Jianghu Legacy - Final: The Promised Light
Reward check
Story Tian Ying clear and quest completion
The Promised Light story clear gives Yaksha Rush. Free Morph is a different reward learned later by deflecting Tian Ying's spinning kicks in the separate Challenge encounter. If a guide tells you to fill an eye-shaped proficiency meter, it is explaining Free Morph, not Yaksha Rush.