China denies CNN report on reciprocal nuclear site visits with US

China's Foreign Ministry spokeswoman Mao Ning rejected a CNN report claiming Beijing and Washington agreed to reciprocal nuclear site visits. The denial comes as SIPRI estimates China's nuclear arsenal at 620 warheads, underscoring ongoing opacity in US-China arms control dialogue. The report's veracity remains unconfirmed, and the denial signals potential friction in bilateral strategic communication.