It has always been a mystery who wrote the Chinese characters on the second set of RMB and subsequent RMB, because there is no detailed record in the file. This mystery was not solved until 1983 more than 30 years later. It turns out that the second set of Chinese characters on RMB was written by Mr. Ma Wenwei, who was then a financial researcher at the People's Bank of China.
On March 1983, 1 day, a newspaper reported that the Chinese characters on RMB were not written by Ma Wenwei. After Mr. Ma knew this, he wrote a letter to the head office of the People's Bank of China, asking for the implementation of this matter.
Only half a month after the head office received this letter, it sent Zhang, a comrade from the School of Finance and a senior arts and crafts artist, to Yangqu County. They took the "Top Secret No.1" file of the head office for investigation and technical appraisal, and confirmed that several sets of ink pens left in the file were exactly the same as Mr. Ma's calligraphy. Although these inks are unsigned, they can still be determined to be written by Mr. Ma.