Hsi may refer to:

For other uses, see HSI (disambiguation).

Flatiron or flat iron can mean several things:

Teresa Teng (January 29, 1953 – May 8, 1995) (traditional Chinese: 鄧麗君; simplified Chinese: 邓丽君; pinyin: Dèng Lìjūn; Wade–Giles: Teng Li-chun; Pe̍h-ōe-jī: Tēng Lē-kun, Japanese: テレサ・テン), was an immensely popular and influential Chinese pop singer from Taiwan. Teng's voice and songs are instantly recognized throughout East Asia and in areas with large Asian populations. It is often said, "Wherever there are Chinese people, the songs of Teresa Teng can be heard." Her songs enjoy popularity among Korean, Japanese, Thai, Vietnamese, Malaysian, and Indonesian listeners as well.

Teng was known for her folk songs and romantic ballads. Many became standards in her lifetime, such as "When Will You Return?" (何日君再來) and "The Moon Represents My Heart" (月亮代表我的心). She recorded songs not only in her native Mandarin but also in Taiwanese, Cantonese, Japanese, Vietnamese, Indonesian, and English.^{[citation needed]}

Teng, a lifelong sufferer from asthma, died in 1995 from a severe respiratory attack while on holiday in Thailand. She was 42.

Paula Tsui Siu-fung is a famous Cantopop singer in Hong Kong. She has been affiliated with the TVB television station until the mid-1990s but has performed for Asia Television Ltd. on several occasions since 1995.

See also: Paula Tsui's discography

According to Guinness World Records in 2003, Tsui's Amway Paula Tsui in Concert 1992 holds the record for the most number of "single event" concerts in a continuous period (43 concerts in 37 days) in Asia.^{[citation needed]} She gave another series of concerts at the same venue, the Hong Kong Coliseum in summer 2005.

Tsui is noted for the voluminous gowns she wears for concert appearances.

Tsui was married to controversial Hong Kong radio host and legislator Albert Cheng between 1975 and 1979. The marriage was then a secret and not known to the public until the early 1990s. Tsui was then already a renowned singer, while Cheng was still relatively unknown at that time.