With the Dao Flowers falling into his body, Zhong Yue could clearly feel his True Spirits growing at an incredible rate. The Sui Tree and Innate Tai Yin Qi would ensure his True Spirits' advancements into the Innate Trie Spirits, while the Dao Flowers were the assurance that the two True Spirits would not be killed!
The Innate True Spirit was the prerequisite to enter one of the state of extremities in the True Spirit level—the awakening of the Innate True Spirits, a state of extremity only achievable by the innate spirit bodies.
If one wasn't the innate spirit bodies, they would never be able to cultivate this state of extremity, and would slowly be distanced away from the innate spirit bodies in the future.
This was one of the many advantages of the innate spirit bodies, none of the races could ever force do it.
Thus, when given the opportunity. Zhong Yue would do anything he could to get it done!