People tend to operate their smartphones with only one hand for convenience. Howerver, studies have shown that people touch their faces 23 times an hour. Especially when someone operate their phones by a single hand, the other free hand is more likely to touch the face subconsciously, which undoubtedly increases the risk of contracting the coronavirus. In order to disseminate the key epidemic prevention information of "reducing facial contact" to the public, we will launch a social communication campaign on your smartphones.