Ye Tianchen pursued Ghost Evil and Yin Sha, not because he lacked the strength to kill them, but because he wanted to play a long game to catch bigger fish. He was determined to completely eradicate the Blood Demon Mercenary Group to avenge his comrades who had died in the Black Mist Forest. This was a promise Ye Tianchen made in his heart to his fallen comrades.
As for the government of Country M, Ye Tianchen had already made up his mind to create a disturbance when the time came and to let this imperialist power know that they couldn't dominate the world alone.
