"I Know You're Feeling Blue" (Chinese: 我知道你很難過) is a song by Taiwanese singer Jolin Tsai, featured on her debut studio album 1019 (1999).

[3] The competition's judge, Wawa Chen, praised Tsai, saying, "She is truly a born singer, relying on her natural talent to sing."

"[4] Universal's music director, Sam Chen, noted that Tsai exhibited contrasting personas: off-stage, she was a quiet student in a uniform, while on-stage, she displayed the potential of a superstar.

However, as Na did not have plans to release an album in Taiwan at the time, the song was sold to Universal through a copyright agency.

Hu also mentioned that Tsai, often labeled as a "Teenage Boy Killer" due to her large male fanbase, was initially seen as a pop idol primarily appealing to young men.