I Upgrade By Rewarding Apprentices

i upgrade by rewarding apprentices – the master is driving the crane west, what should i do if the enemy comes to the door? ! awaken the apprenticeship rebate system, the more you give to your apprentice, the more you get back to your master! hahaha, good disciples, hurry up, as a teacher, you never hide your secrets! i upgrade by rewarding apprentices wǒ kào dǎ shǎng túdì shēngjí 我靠打赏徒弟升级