Using the Grass Babies to steal the flesh and blood civilization of this planet.
It sounded nice, but after some pondering, Yu Liang felt his enthusiasm diminishing.
Given the Grass Babies' intelligence, a significant period of evolution would be needed for them to reach civilization. By that time, it'd be uncertain if they would still exist, let alone become a force he could shore up.
Unless he's currently in a "past period", and the real-world is thousands or even tens of thousands of years later.
An amusing thought indeed. He could introduce a batch of Grass Baby seeds here, like the Engineer creating humans with black liquid in the movie "Prometheus". He might return to reality to find the Grass Babies flying to Earth in a spaceship seeking their creator.
Yu Liang considered this possibility, thinking his reality wouldn't be so tastelessly exciting.