The web search results mention China discussing 'shared security and risks' in the context of global challenges, but the evidence provided does not contain multiple independent news reports confirming this specific phrasing or the context of China calling on Cambodia for this. The evidence is limited to general discussions of global risks and China's diplomatic activities.

The claim details a specific quote attributed to 'Wang' urging cooperation to 'firmly hold the reins of development and security in their own hands' during a meeting in Phnom Penh. This specific quote and context are not corroborated by multiple independent sources in the provided evidence, although the general context of China urging cooperation is present.

The claim specifies that the Cambodian foreign ministry reported an agreement to upgrade the mechanism to include the Chinese public security ministry and the Cambodian interior ministry. While the general topic of upgrading diplomatic mechanisms is mentioned in the context of meetings, the specific details regarding the inclusion of these two ministries are only present in the claim itself and are not corroborated by multiple independent sources.

The statement regarding the 3+3 elevation aiming to 'deepen bilateral cooperation and respond to evolving regional and global challenges' is found in a web search result, but no other independent sources corroborate this specific statement or the context of the 3+3 elevation.

The claim quotes a detailed statement from China regarding building an Asian security model based on 'shared security and risks,' common ground, dialogue, and consultation. This specific, lengthy quote is not corroborated by multiple independent sources, although the general theme of China promoting cooperation is present.