Changgong can be found in the food court at No. 136 Shanda Road, Jinan. The food court recruits 50 long-term workers for long-term cooperation. The small workers mainly do odd jobs on the construction site, while the big workers also do side jobs. Their wages are paid on time, and they can live on the construction site and take care of food and food. The construction site is a brand-new construction site in Jinan City and they work there for three years.