expand her market and fan base beyond Hong Kong. They released her first Mandarin album, "Worth It" (值得). The album was number one on the Taiwan IFPI chart for six consecutive weeks. She won a number of awards, most notably she was voted back-to-back as the most popular female artist by TVB from 1996 to 1997. She went on to win the top female award again in 2001. She would finish that year with her first concert titled "Sammi's X-Dimension Concert" (鄭秀文X空間演唱會). In 1998 she was also a featured star in a Heineken sponsored Music Horizons concert along with international singers such as Boyz II Men and Julian Lennon. By the time Cheng was 24 years old, she had already released four greatest hits albums. In the 1990s, another female star, Faye Wong was one of her main rivals. When they were on stage together, they would be cold to one another. The rivalry was confirmed in the 1999 TVB music award night. Both Wong and Cheng were arranged to sit next to each other backstage. Cheng avoided Wong by repeatedly going off stage to fix her make-up. In addition, her fans were angry and hissed at Faye Wong when she went on stage to receive an award. Wong herself has insisted that the rivalry wasn't true, and that she was friendly toward Cheng. In July 2004, she held 7 nights of "Sammi Vs Sammi" concerts in Hong Kong. She also broke the record as being the youngest female singer to hold more than 50 accumulated concert nights in the city. From December 2014 to January 2015, she held 12 nights of 'Touch Mi' concerts in Hong Kong Coliseum. She also invited heavyweight stars to be the guests of her concerts, including Andy Lau, Jacky Cheung, Leon Lai, Ekin Cheng, Louis Koo, Nick Cheung and Eason Chan. Her 'Touch Mi' concert extends to World Tour in 2015 and 2016 with 4 shows at Genting (Malaysia), 3 shows at Macau (China), 3 shows at Singapore, 2 shows at Guangzhou (China), 1 show at Foshan (China), 1 show at Melbourne (Australia), 2 shows at Sydney (Australia), 1 show at Shenzhen (China), 1 show at London (United Kingdom). Her 'Touch Mi' World Tour concluded in Hong Kong with another 8 shows in September 2016, hence bringing her total number of shows for this world tour to 38. Some of her new guest stars