On March 21, 2015, the United Nations issued a series of stamps for "World Poetry Day". The Chinese poetry selected "Silent Night Thoughts" by the famous Chinese poet Li Bai in the Tang Dynasty.
Since 1999, UNESCO has designated March 21 every year as "World Poetry Day". The commemorative event in 2015 is to issue a set of stamps, with 6 souvenir sheets and 36 stamps, containing representative poems in six major languages ??of the world: English, Spanish, Chinese, French, Arabic and Russian. On the "Quiet Night Thoughts" stamp, the entire poem is written in regular Chinese, and the stamp issuance information is accompanied by an English poem translated by Yang Xianyi and Gladys Dai.