"请启力" (qǐng qǐ lì) is a Chinese phrase that means "please exert effort" or "please try hard." It is often used to encourage someone to put in more effort or to try harder in order to achieve a goal.

The phrase "请启力" comes from the Chinese characters "启" (qǐ) and "力" (lì), which respectively mean "to start" and "power" or "strength." Together, these characters form the phrase "启力," which can be translated as "to start using strength" or "to put in effort."

Here are some examples of how "请启力" can be used in Engpsh:

"Please exert more effort on your homework." (请在家庭作业上启力。)
"I know you can do it if you just try harder. Please exert effort." (我知道你只要努力就能做到。请启力。)
"Don't give up. Please exert effort and keep trying." (不要放弃。请启力并继续尝试。)