Related Links:
https://github.com/dompdf/dompdf
DOMPDF of Chinese support: https://blog.csdn.net/u012560213/article/details/80914406
DOMPDF use records: https://blog.csdn.net/nx_xn/article / the Details / 89.53412 million
https://cloud.tencent.com/developer/article/1476893
