Secret of the Heart is a 1998 TVB production that was first aired from February 16,1998 to May 10, 1998. The drama had a powerful roster that is made up of Gallen Lo, Felix Wong, Amy Kwok, Kathy Chow, Sunny Chan, Ada Choi, Jessica Hsuan and Nick Cheung. It won three TVB Anniversary Awards, including Best Actor for Gallen Lo, Best Actress for Ada Choi and Best On-Screen Improvement Award for Nick Cheung.

The drama also received a late night hour rerun during 2003 and 2010. It was digitally remastered for the 2010 rerun.

The King of Yesterday and Tomorrow is a Hong Kong television drama serial that originally aired on Jade from 27 January to 21 February 2003. According to legend, Yongzheng Emperor of the Qing dynasty may not have died of natural death and was actually assassinated. The plot is an imaginative time-traveling story based on the continuation of what happens after the assassination attempt.

The drama is produced by TVB under executive producer Siu Hin-fai. With an average of 2.21 million viewers, the drama is the fourth highest rating drama series of 2003. It received five nominations at the TVB Anniversary Awards, winning four. Maggie Cheung Ho-yee won the TVB Anniversary Award for Best Actress and one of twelve My Favourite Television Character awards, while Paul Chun won My Favourite Powerhouse Actor. Kwong Wa was nominated for the TVB Anniversary Award for Best Actor, and won one of twelve My Favourite Television Character awards.