Do the Himalayas separate China from Russia?

No, the Himalayas do not separate China from Russia. The Himalayas are a mountain range located in Asia, separating the Indian subcontinent from the Tibetan Plateau. China and Russia share a border, but it is not along the Himalayas. The border between China and Russia is primarily located in the far eastern region of Asia and is formed by the Amur River and the Ussuri River.