[CUSIP No. 16944W104 1 NAME OF REPORTING PERSONS. Zhangxing Wang 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) ☐ (b) ☐ 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION Hong Kong Special Administrative Region of the People’s Republic of China NUMBER OF SHARES BENEFICIA]