Your wrong
That aircraft is unsafe, FAA will not certify it and there are many well documented faults with it, if you have ever flown a Y-12 you would know the standard of Chinese aircraft. Tongan got them practically for free, in exchange for exclusive fishing rights and food subsidies, Chinese investment and Tongan government corruption, politicians taking kickbacks... If you had actually operated there you might actually know what your on about.. Pretty easy to shake a big stick from behind a keyboard