What is the water margin of MD?

..... there will be MD in front of online games?

I don't know what a swordsman is, such as an assassin, an assassin, an iron gunner, an archer, a feng shui master, a kite player, a gunner, a gunner, a fisherman and an assassin. Qigong master is not, the rest should be psychological counselors, but psychological counselors and fishermen in physics department are not much different in blood.