The reason that I tried WPS.
The reason that I tried WPS is because it is legally and free, no need to pay money. Then I found that WPS is very easy to use, 98% of its formulas and formats are similar to Excel, only some tool bar is different, so that it does not require much adjustment, no need to waste time to learn to use WPS .I can save the files in Excel format and send them to people who use Excel to open and read it.