The CEO and Director were most probably trying to take advantage of the high share price and make a quick buck (or three). As a result, the sale of 88 million shares (24 from the CEO, 20 from the Director, and another 40 from Hetai Investment Ltd) made the share price plunge from about 6 cents to about 1.25 cents.
Since the founding members did NOT sell shares in May 2020, then the rest of that statement is wrong as well. In other words, ZHUD was able to trade fine in May (before the founding members sold their shares). As a matter of fact, 100s of millions of shares traded during that timeframe.