9.How to ensure the children's outdoors sports in the case of serious air pollution?
Time：2019-08-13 15:47:41 Views：104
2013, Huijia built 4 bubble with 8000 square meters. The PM2.5 value is less than 10 inside. Therefore, even in serious air pollution day, Huijia students can also ride horse, running, and play basketball, volleyball, tennis etc.