The HSK 6 certificate is valid indefinitely in terms of representing the language proficiency achieved at the time of testing. However, when used as proof of Chinese language ability for entering Chinese universities, the validity period is two years from the test date. Here’s a breakdown:

- Long-term Validity: The HSK 6 certificate itself does not expire. It serves as a permanent record of your Chinese language proficiency level at the time you took the test.

- Two-year Validity for University Admission: If you plan to use your HSK 6 score to apply to a Chinese university, the score must be within two years of the test date. Universities typically require that the HSK score be recent to ensure that your language ability is up to the required standard for academic study.
- Certificate Collection: If the test center is holding your certificate for collection, you should pick it up within two years. After this period, the test center may no longer retain the certificate.
