The evidence shows that the Chinese Foreign Ministry (via spokespersons Lin Jian and Mao Ning) supports dialogue and negotiations between Russia and Ukraine. While the general sentiment of considering both sides is a known pillar of China's diplomatic stance, the provided snippets do not contain the specific phrasing 'negotiations must consider the concerns of not only Ukraine but also Russia' across multiple independent sources to qualify as corroborated. Only general support for negotiations is mentioned in the search results.