"Since you don't lack money now, why not you and Mom go travel around and see different places? Oh, and if you come across any hundred-year-old lingzhi or ginseng, you can keep them. I can teach you alchemy."
Parents could cultivate, but without the help of medicinal herbs, the speed of cultivation was ultimately limited. Now, his parents could survive by cultivating his techniques, but what about in five hundred years, a thousand years?
It was too slow for parents on Earth to increase their cultivation base; they could only hope to find medicinal herbs in those rarely visited places on Earth.
"Go for a spin, yes, I've long said we should go for a spin. It's your mother who can't bear to leave her chickens and the vegetables she's grown."