It's "Oh Le Le" by Pizza Boys.

1. "Ma Dashuai 1" is a comedy-themed TV series directed by Zhao Benshan, written by Bai Tiejun, and starring Zhao Benshan and Fan Wei. The play premiered on CCTV in 2004. The play tells the story of farmer Ma Dashuai entering the city and a series of sad and happy stories that followed.

2. "Oh Le Le" is a song sung by DJ Cavarra and is included in the album "Best Dance 101" released on February 1, 2010.