Fantasy: You Can Become Stronger by Working Hard

Traveling through the fantasy world, Han Lin unexpectedly obtained a system that can become stronger with effort. With every effort, you will gain something. Bite! You practice hard and get a critical hit reward! [Ding! You practice martial arts and get critical hit rewards! [Ding! You study hard and get critical rewards! [Ding! You train hard and get a critical hit reward! [Ding! You work hard to rest and get a critical hit bonus! As long as you work hard, everything can be rewarded with critical hits, making everything very simple. Han Lin thus embarked on the road to invincibility and no longer had any shortcomings! When someone asks why he is so powerful and almighty. He just smiled slightly: "As long as you work hard, you can do it too." (The introduction is too weak, please move to the text)