according to the QQ music query, the song "Night on the Grassland" was sung by David Jiang, with the word "Zhang Jiayi" and the song "Tian Ge", which was released on August 1, 1999.

Song snippet: How quiet the beautiful night is. Only my piano is left on the grassland. I want to write a letter to a girl far away. Yeah, it's a pity that there is no postman to convey my feelings.