What is the relationship between China Nanshan Development (Group) Co., Ltd. and China Merchants?

China Merchants Group holds more than 30% of the shares of Nanshan Group through China Merchants (Nanshan) Holdings Co., Ltd., and the holding companies of Nanshan Group include Shenchiwan A(000022. SZ), Ji Shen B(200053. SZ) and Elegant Shares (0023 14. SZ)。