Change your cover photoUpload Change your cover photoUpload Change your cover photo Da Xiong This user account status is Approved followers0 following0 Follow About About Posts Posts Comments Comments This user has not added any information to their profile yet.Company / InstitutionSchool of Civil Engineering, Qingdao Technological UniversityCountryChinaRegistration DateJoined 31.7.2020User LocationQingdao, Shandong, China Only fill in if you are not human