On May 17, Xie Zhenyi from Guizhou Bridge Construction Group Co., Ltd. and Yao Yongkai from Guizhou Road and Bridge Group Co., Ltd. and Yao Yongkai from Guizhou Road and Bridge Group Co., Ltd. and Yao Yongkai from Guizhou Road and Bridge Group Co., Ltd. went to Chengdu Taijian Technology Co., Ltd. for interaction.