I Can Earn Interest

I don't have any other golden finger.

I just earn interest.

Hold on to a bottle of superhuman nutrient solution for twenty hours without using it, and you get another bottle as interest.

Leave a superhuman spirit plant unused, and you get another one as interest.

Resist using a chance to reach enlightenment, and you get another chance as interest.

Get a chance at romance, drive the woman away, and you get another chance at romance as interest.

Leave a scroll of cultivation techniques unpracticed for thirty hours, and you get a chance to advance your cultivation.