C42 You're a Good Boyfriend

A whole sack of herbs couldn't sell for even ten bucks, but Dung Qiu thought those herbs were really easy to sell. There was no upfront cost, and yet they could be sold. She had never understood how to make money before and had wasted decades of her life. She asked Gu Yingchu, "How come no one thought of this before?"

Gu Yingchu turned to look at Dung Qiu, finding her somewhat amusing, and said