Ask the father and daughter of Japanese drama 07 to become Xiaomei's cell phone ringtone on the 7 th.

According to the information you provided, I think you may be asking about the theme song of the Japanese drama "Father and Daughter for Seven Days" (Japanese name is "のぅつわ"). Father, the play was broadcast in 2007, starring Kotaro Koizumi and Ryoko Hirosue.

The theme song of the play is a song named Jun のぅつわ (Japanese pinyin is "Kimi Nooutsuwa" and Chinese translation is "Your Letter"), which was sung by Japanese female singer Akina Nakamori. This song is also used as the ending and interlude in the play.

As for "No.7 father and daughter became Xiaomei's ringtone", I didn't find any relevant information and resources. If you have other questions or need more help, please feel free to tell me.