He wouldn't commit suicide. The Empire Mecha was taller than his. He manipulated his mecha to make a side tilt movement.
Thereby, hitting the target.
This couldn't make the Empire Mecha let go of its grip. Even if he beheaded the Empire Mecha, based on the previous operation instructions, the Empire Mecha would still lock its arms in place, limiting his movements.
But that's okay, consider it as a shield then.
Ji Xinghe, keeping a careful watch in every direction, rotated his body taking advantage of the mecha's capabilities, dragging the Empire Mecha along, using the Empire Mecha's side to block a full-force attack from a Mecha Spear.
His mecha was unscathed; the Empire Mecha clung to his mecha once again, suffering additional damage, although his movement was restricted, his arms weren't.
Swinging his sword, his moves were simple, nothing but pure, raw power.
The Empire Mecha who tried to take advantage was decapitated by Ji's sword before it could even withdraw its spear.