I think it is safe and has more advantage if you store it in a most reputable exchange like binance and houbi or kucoin
There is no such thing as "reputable exchanges" in cryptocurrency world. You think all the previously big exchanges such as Mt Gox, Cryptsy, Bitrex, ... were not considered "reputable" at the time?! They all were. For example Mt Gox was so big and trusted that it controlled more than 85% of the total trading volume at the time and yet it scammed its users.