It's hard to build a muscle like Donnie Yen.
According to your situation, the first fitness and muscle training should first have meat (meat is not fat), pay attention to diet, eat lean meat, protein and milk to supplement protein.
The second is exercise. I suggest you do push-ups (you can practice triceps brachii and pectoralis major back muscles) from small to large, from small groups to large groups. For example, if you can do 30 at first, do 30 (count) 20 15 10, and then gradually upgrade to 40 30 30 25 10 ... so that your upper limbs will develop quickly. Very effective. The whole person will get thicker. I can make 800 in one night, such as120100100100 80 60 20. I'm just saying push-ups suggest getting started.
If the hand muscles are not afraid of hard work, I suggest you practice handstand and test the abdominal muscles, back muscles, hand muscles and waist muscles. It is very easy to use. If not, lift the dumbbell.
If your muscles are not full after a period of time, I suggest you increase aerobic exercise (ps. Anaerobic exercise is aerobic exercise in indoor fitness equipment or outdoor exercise such as jogging, skipping rope and ball games), which can improve the oxygen transport ability of your red blood cells and make your muscles fuller.
Also with a good diet, eat lean meat (beef, chicken) protein milk to supplement protein.
Pay attention to adequate sleep and have willpower. In fact, if you have perseverance, you can practice at home instead of going to the gym.