There is no fixed time interval before marriage that the premarital check-up has to be performed.

至于在婚前多久才须要做婚前检查，并无特定限制。

youdao

There is no fixed time interval before marriage that the premarital check-up has to be performed.

至于在婚前多久才须要做婚前检查，并无特定限制。

youdao