Luckily for me, my points don't expire until end of 2021.

From the Fortune Wings Club Website:

"What if my Fortune Wings Club points are about to expire?

1. You can request points retro-crediting within 180 days from the next day of your flight or from the date when purchase is made with a non-airline partner.
2. If you have new travel plans in the near future, you can request points retro-crediting for your flight before your points expire.
3. You can redeem ticket, upgrade or other commodity by using your points to extend the expiration date of your points.
4. Before your points get expired, you can deposit points earned from a partner company (such as points converted from the partner's program) into your Fortune Wings Club account to extend the expiration date of your points ."


I am not 100% sure, but it may be possible to extend points with a hotel or rental car reservation.
Hotels: https://ffp.hnair.com/FFPClub/en/hqjf/index.html?hb_jd

For Hertz,the rules are:

Terms and Conditions

1. Rent cars in more than 8800 Hertz stores over 150 countries, and provide Fortune Wings Club member card number and Hertz special discount code(CDP#)1628570.
2. It will be seemed as one rental business when rent one car beyond one day, or rent different cars in one store days on end.
3. Hertz will issue only one credit for each continuous rental from Fortune Wings Club Member.
4. Points awarded from this merchant shall be Award Points, not Status Qualifying Points (SQPs).