How does China Mobile cancel call forwarding through SMS?

Cancel the shutdown and call transfer that cannot be connected; Dial # # 62 # directly with your mobile phone; Cancel call forwarding and dial # # 61# directly without answering; Cancel the busy tone transfer and dial # # 67 # directly; Cancel unconditional call forwarding and dial ##2 1# directly. If you want to clear all call forwarding settings of this machine, please dial ##002# directly.