The board of directors of the CHYY Development Group Limited announced that, with effect from 2 December 2022, Mr. Yang Mingzhong has been appointed as the chief executive officer of the Group. and Mr. Xue Jiangyun, the former chief executive officer of the Group, has been re-designated to the chief engineer officer of the Group. Mr. Yang Mingzhong ("Mr. Yang"), aged 44, is a senior engineer (engineering design and construction), a PRC registered utility engineer (heating, ventilation and air conditioning), and a registered class A construction engineer (electrical and mechanical engineering).

Mr. Yang graduated from Harbin Institute of Technology in 2001 with a bachelor's degree in Architectural Environment and Equipment Engineering. Since January 2003, he joined subsidiaries of the Group Ever Source Science and Technology Development Group Co. Ltd. ("HYY Group").

Mr. Yang has been appointed as a vice president of HYY Group, system design director and executive vice president of CHYY Development Group Limited. Mr. Yang has been engaged in HVAC mechanical and electrical design and construction management for a long time. Mr. Yang is specializes in comprehensive application technology of geothermal energy heating system.

He has extensive business management experience.