C1453 Stone chamber mechanism

Xiao Hua looked at Wang Yunjie and the others who were laughing so hard that they seemed to be out of breath.

"I won't laugh, I won't laugh." Cough cough, Little Flower, when did you get so many scenes? " Wang Yunjie tried his best to calm down.

"Alright, alright. Let's get down to business." Wang Yunjie coughed lightly twice, then continued