Date of Birth: 
Place of Birth: Harbin, Heilongjiang, China
About Sun Siyin
- Sun Siyin (Chinese: ???, born June 6, 1984) is a Chinese former competitive figure skater.
- She is a four-time (2000–03) Chinese national silver medalist.
- Her highest placement at an ISU Championship was 11th at the 2003 Four Continents.
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