SnoozySloth It is easier for Chinese author to write on the phone. Their Hanzi is easier on the phone, you can write using your hand.
500 words chapter is also bad. Readers won't have enough they thought you didn't write anything. 1.000 is the minimum. 2.500 is the maximum. Sometimes, when necessary 3.500 is very long.
If too long, you will face this Rabbink's readers problem. Early readers of my chapter felt confused with the idea. There were huge ton of information added. 1.500 is the magic number. Reader had enough and still made the novel bite sized. Imagine my readers binge read 3.500~4.500 chapters and they took 20 chapters (that would equal to 40~60 common chapters). Some would surrender at that, while the other complained at information overload.