What is the fastest career upgrade of Shenqi single brush?

I think it's a soldier. Soldiers have a set of skills * * * 4 (4 after the first 3 in level 40). The main reason is that soldiers have more blood and faster attack speed than other professions except knights. Coupled with better equipment, they can run around like knights, pulling a group of strange people. Seeing that their blood volume is low, they can drag strangers around.