9 am.
The business hours of the Mung Bean Cake Shop on Nanchang Jewelry Street are from 9 am to 9 pm, so the business hours in the morning are at 9 o'clock.
The Mung Bean Cake Shop in Nanchang Jewelry Street is a store with very high sales volume in Nanchang Jewelry Street. It is one of the three "best-selling" restaurants in the market. The other two are Xiao Deng's stinky tofu and Xiaoping and his wife's rice dumplings.