Very likely indeed that the Chinese had the time to fully assemble and dismantle it, or even had already known everything about this drone. I remember of one US missiles that get lost in a bombing campain of Afghanistan. The Chinese, among many other countries, paid handsome money the people from Afghanistan to find any US military thing and transport it to China ( or their respective country) for 'study'. I suspect that among all the drones used in the Middle East, some have been bought by Chinese for 'study'.