Lin Yuan placed the egg in Red Thorn's corrosive cavity for it to hatch. He conveyed his thoughts to Red Thorn through his spiritual fluctuation, and it soon understood his intention.
It used the thornless vine to wrap the Acid Corrosion Queen Bee's egg in his hand. It did not place it in its corrosive cavity but into the Mouth of Relinquish.
When it swallowed the egg in its Mouth of Relinquish, Lin Yuan immediately fed Red Thorn with the dimensional lifeforms' flesh from the Diamond fey storage box. He selected a lot of Class 3 alien insect flesh with strong acidity and fed them into its Mouth of Relinquish.
When Red Thorn evolved into Bronze, Lin Yuan chose Class 3 dimensional lifeforms, which were akin to Gold feys' flesh, for it. After that, he started channeling the spiritual power within his body and made the Mouth of Relinquish quickly absorb the flesh energy.
When the Acid Corrosion Queen Bee hatched, it would immediately build its nest.