Great comparison shots. Quite frankly anyone interested in engineering should realise how those "copy/reverse engineering"-claims dont wash. Look at dimensions, look at the wing design and mounting spots. Hell, Japan in contrast "slightly" adapted F-16, & it caused major dramas. https://twitter.com/RupprechtDeino/status/1245964417939931138

Did PRC get eg data from Lavi-project and use it in their own developments? Without a doubt. Does that mean they just cloned/copied a Viper? No.