You can't pursue it for more than five years.
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criminal law
Article 87 Limitation period for prosecution
(1) If the statutory maximum penalty is less than five years of fixed-term imprisonment, after five years; (2) Ten years if the statutory maximum penalty is fixed-term imprisonment of not less than five years but not more than ten years; (3) Fifteen years if the statutory maximum penalty is fixed-term imprisonment of not less than ten years; (4) Twenty years have passed if the maximum legal punishment is life imprisonment or death penalty. 20 years later, if it is deemed necessary to prosecute, it shall be submitted to the Supreme People's Procuratorate for approval.
Article 88 Extension of the time limit for prosecution
Those who evade investigation or trial after the people's procuratorate, public security organ or state security organ files a case for investigation or the people's court accepts the case are not limited by the time limit for prosecution. If the victim files a complaint within the time limit for prosecution, the people's court, the people's procuratorate or the public security organ shall file a case but not file it, and it is not limited by the time limit for prosecution.