He certainly didn't want Fairy Lady to only learn the first part of these techniques without the second one; it's better to learn everything all at once.
"Give all the scripts to me, I have a use for them," Li Huazhao said, then pointed to the three mechanical beasts piled in front of him, "Take these mechanical beasts with you."
These beasts were created by Fairy Lady, and he didn't mind parting with them.
Once Fairy Lady had learned the techniques, wouldn't she be able to create whatever she wanted?
Moreover...
Why settle for creating these common mechanical beasts? According to the logic of the Weird World, as long as there were enough materials, they could construct a towering mecha.
Li Huazhao immediately thought of the charm-paper machine-gun tower he had seen earlier in the room, this would be a weapon of mass destruction if its range was improved and installed on a mecha.
