What zodiac can't wear a dragon pendant and what zodiac can't wear a Panlong Guanyin pendant?

According to the traditional geomantic theory, people who belong to sheep can't wear dragon pendants, because dragons and sheep are alike, and wearing dragon pendants may bring bad luck. Panlong Guanyin pendant is suitable for wearing according to the individual zodiac. People who belong to snakes are generally not suitable for wearing Panlong pendants, because dragons and snakes collide, which may lead to bad luck after wearing them.