Is there a typo in Wen Zhiming's heart sutra in lower case?

There is no typo in Wen Zhiming's Heart Sutra in lower case. In the twenty-first year of Jiajing, Ren Yin (1542) was 73 years old in Wen Zhiming. I went to Kunshan, and on September 21st, I wrote the Heart Sutra in fine print for the collector Zhou Fenglai. ? Wen Zhiming is modest and elegant. His youth is not smart, but slightly tall and straight. He studied literature in Wu Kuan, books in Liying Town and painting in Shenzhen. His paintings are particularly famous and he is a leading figure in Wu Pai.