أنمي Tunshi Xingkong Movie: Juezhan Yuanshi Xing

During Luo Feng's training on the Primeval Star, he remains calm despite the covetousness and encirclement of alien races. He uses his wisdom and strength to fight back and uphold the dignity of humanity. "I have a blade that can cleave the universe!" That breathtakingly beautiful battle blade accompanies Luo Feng as he slashes his way through the world! The Demon Race, the Mechanical Race, and the Insect Race reappear, forming a three-race alliance. The leaders of the three races, along with 6,000 Universe Venerables, besiege Luo Feng. Luo Feng unleashes the powerful force of "I Am the Universe," annihilating them in one fell swoop.

(Source: Tencent, translated)

Note: The events of this movie occur between episodes 134 and 135 of Tunshi Xingkong 4, or episodes 219 and 220 overall.