Remarriage after divorce does not count as a second marriage. According to the "Marriage Registration Regulations", the registration of remarriage and second marriage is the same as the registration of normal marriage. However, in fact, the parties to the remarriage are still married before. The person who has been married before, and the parties involved in the second marriage are generally not the ex-wife or ex-husband.
Legal Basis
Article 5 of the "Marriage Registration Regulations"
Mainland residents applying for marriage registration shall produce the following certificates and supporting materials:
(1) My household registration book and ID card;
(2) A signed statement that I have no spouse and that I have no direct blood relationship or collateral blood relationship within three generations with the other party.
Article 14 of the "Marriage Registration Regulations"
If a divorced man and woman voluntarily resume their marital relationship, they should go to the marriage registration authority to register for remarriage. The marriage registration provisions of these Regulations shall apply to remarriage registration.