How does Wang get Ma Rong's WeChat content?

Wang got Ma Rong's WeChat content in this way: once Ma Rong went out and put his mobile phone at home to charge, but it kept ringing. Wang wanted to help Ma Rong answer these missed calls, but Ma Rong's mobile phone had a fingerprint password, so Wang couldn't unlock it, so he took his mobile phone and asked his daughter Ma Rong's mobile phone password. After her daughter reached out to unlock the fingerprint password, Wang saw Ma Rong and Song Zhe's WeChat records.