Dumbbells, like powerful gyms, need exclusive technical production. There are three kinds of dumbbells: 1, dumbbells, and one is brought with you at birth. You don't need technology to unlock them. Can make 4 stones+1 branch, damage 27, use 100. It consumes 1 endurance per second in fitness,+1 strength per second in weak state, and+1/3 strength per second in normal state and strong state. Attack or throwing cost 10 durability.

2, gold dumbbell, need two copies, 2 gold +2 Shi Zhuan +2 branches, damage 40, usage times 100. Exercise consumes 0.5 endurance per second, weak state +2 strength per second, normal state+1 strength per second. +0.375 strength per second in powerful state. Attacking or throwing consumes 5 durability.

3. Gemstone dumbbell needs a magic copy, 1 purple stone +2 Shi Zhuan +2 branch, damage 57, usage times 100. Exercise consumes 0.5 endurance per second, weak state consumes +2e strength per second, and normal state consumes +2 strength per second. +2 strength per second in strong state. Attacking or throwing consumes 5 durability.