Where did you get this information, Ed? I cannot find any reference to CRI ever having transmitted via a relay station in Iran.
CRI programmes for Europe are transmitted from a number of powerful stations in mainland China, and also via Cerrik, in Albania. So far as I can discover, the only other shortwave relays of CRI outside of China itself are in Bamako (Mali) and Habana (Cuba).
The 6075 kHz broadcast of China Radio International originates from Kashi-Saibagh, China with a power of 100 kW. 6075 kHz is also used by the Voice of the Islamic Republic of Iran at 0220-0320 UTC (only) for a broadcast in the Pashto language with a power of 500 kW.
The only broadcast station currently listed on 7120 kHz is Radio Hargeysa, Republic of Somaliland. The Republic of Somaliland is a self-declared independent state without international recognition. As such, it is unlikely that it would pay any attention to the ITU regulations!