Why is the armor of medieval knights in Europe so beautiful and that of China so ugly?

In the Middle Ages, there were only chain mail and scales. According to the upstairs, it was about 15 kg to 20 kg. The full-body plate armor invented during the Renaissance can eventually reach 40 kilograms, not counting the chain mail worn inside, which is usually worn by cavalry. Ordinary soldiers only wear a breastplate on their chests at most.