May is known as the '520' or 'I Love You' day in China, which has become a second Valentine's Day for young couples. The numbers 520 resemble the phrase 'I love you' in Chinese, which is pronounced as 'wu er ling'.

On this day, couples exchange gifts, go on dates, and express their love for each other with romantic gestures. Many restaurants and stores offer special deals and discounts to attract couples.

The origin of this holiday is not clear, but it is believed to have started as a marketing campaign by Chinese online retailers to promote the idea of a second Valentine's Day. It has since gained popularity and become a cultural phenomenon.

In recent years, the celebration of May 20th as a romantic holiday has spread beyond China to other parts of Asia, such as Taiwan and Hong Kong.

While some may argue that this holiday is just another commercialized event, it has become a meaningful day for many couples to celebrate their love and strengthen their relationships.