Rainie was born Yáng Chénglín (楊丞琳) in Taiwan. She first debuted in the entertainment industry as a member of the girl group, 4 in Love. There, all the girls were assigned names with references to weather. The group achieved mediocre success and disbanded in 2002. Yang continued pursuing a career in the industry, hosting television shows (such as ‘Guess Guess Guess’).
Her big break came when she starred in the hit CTV drama, Devil Beside You (惡魔在身邊), in 2005. The same year, she also released her first album, My Intuition (曖昧) which included two songs from the TV drama.The album achieved a high level of success and created a record of being the only debut album in the Chinese music industry to reach platinum status.
Soon after, Yang released her second album, Meeting Love (遇上愛) which sold very well. Hoping to portray herself as a ’serious’ actress, Yang shed her cute-girl image to star in the movie Spider Lillies. The movie was lesbian themed and won the Teddy Award for best feature film at the 2007 Berlin International Film Festival. Later, she retreated back to her previous cute image by starring with two of her Devil Beside You co-stars in Why Why Love (換換愛) in 2007. Her third album, My Other Self (任意門) was released on the 7 September, 2007, and featured two theme songs in Why Why Love.
Subsequently, Yang starred in Miss No Good (不良笑花) in the fall of 2008 which was met with high viewership ratings. Her fourth album, Not Yet a Woman (半熟宣言) was released around the same time and featured two songs from the drama. Her next drama was ToGetHer (愛就宅一起) in which she starred as the agrophobic Chen Mo Mo (陳默默) alongside Jiro Wang (汪東城).
Her next drama, Hi, My Sweetheart (海派甜心) showed a change in the roles she portrayed. Usually the sweet, cute character, Yang became a tough girl in the drama which aired on November 1, 2009. Her fifth album, Rainie & Love…? (雨愛) was released on the very first day of 2010. Due to the success of her dramas, Yang is planning on extending her career overseas and releasing a Japanese version of Ai Mei (曖昧).