Today is May 20th, which was originally an ordinary day. Because the pronunciation of 520 is similar to the Chinese "I love you". As a result, more and more people take advantage of this to do marketing. Marketing activities are similar to that of Valentine's Day and Qixi Festival (Chinese Valentine's Day). For example, this morning I heard an advertisement about eye protection stickers. People do the eye protection patch promotion on May 20th, taking advantage of 520 (I LOVE YOU). The advertising is probably, "If you love him, give him a box of eye protection patches, 99 yuan a box, and the event is limited to one day on May 20." . I really admire the ingenuity of the merchants.