In wenku.baidu.com of Baidu Library, with the differences between Chinese and Western English as the key words, you can find many things by searching ppt, such as the following:

/view/ff 2037 1 ba 76 e 58 fafab 003d 8 . html

/view/8f 43 dab 169 DC 5022 aeaa 00 BF . html

/view/cc 0 A8 DCF 050876323 1 12 12ba . html

/view/0e 9e 87d 526 fff 705 cc 170 AC 5 . html