How to use Jiayuan stamps?

They are usually bought by texting. 2 yuan per Jiayuan stamp. The seal of Jiayuan is a pass to contact each other. In other words, if you write to the other party, the other party will not see your letter unless the other party has a reading stamp (the system gives two-star and above members a reading stamp every day). If the other party is a leaf member who reads letters for a monthly subscription or diamonds, you can send out letters for free. At this time, there is no need to post Jiayuan stamps.