Really, a Type 98/99 is a further development of a Russian T-80 and T-72, my my I know that China purchased a few of both but to say that they copied these tanks not a true statement, the only thing that even resembles a T-72 is the hull frontal and that is it.
No, they did not copy the German Leo 2 series turret, there is a difference in the welding process and the modular armor suite, please keep in mind that Leo 2 series turret is not modular it is laminate based.
Okay. countries that have influenced Chinese tank design would include the following:
Germany - automotive
Ukraine - maingun, projectiles and automotive
France - FCS and modular armor technologies
UK - maingun design, China does make a L7 series barrel, compliments of China.
Israel - tank projectiles.
Why would Russia get pissed at China, they have made tons of cash off of them, mostly aircraft and naval sales, but a few BMP 3 turrets have been sold along with Shtora systems, Arena is currently being evaluated on the decision to purchase is still not been brought to public knowledge.
You also realize that Pakistan purchases the Al Khalid manufacturing rights from China do you not, what tank do you think that this is based off of.