Perhaps it was the influence of the '86 edition of Journey to the West during his childhood that subconsciously made him fond of becoming Peng.
It was what led his Evolution towards Peng.
Or maybe there was some other reason that caused his inherently limitless Evolution ability, which should have nothing to do with the concept of "Peng," to aim for it.
In any case, becoming "Peng" was not important.
Because the essential reason for his Evolution was still unclear.
He could feel that he should be able to change the direction of his Evolution at any time, and no longer transform towards the concept of "Peng."
His Evolution towards the concept of "Peng" was only because the force that determined his Evolution had collected the fantasy settings of "Peng" and then set his Evolutionary path towards it.
In reality,
He could change it at will.
