What's the difference between persistent efforts and persistent efforts?

There is no difference. In fact, one of these two words is a typo. The correct way to write it is to make persistent efforts, which is often mistakenly written as persistent efforts.

Make persistent efforts. Answer: take up the fight and meet; Li: Honing means encouragement and hard work. Refers to cockfighting, sharpen your mouth before each confrontation. Metaphor to continue to work hard, one more effort. Describe redoubling your efforts.

From the Cockfighting Couplet written by Han Yu and Meng Jiao in the Tang Dynasty: A spray wakes you up; Make persistent efforts. It means: spray the chicken with water to wake it up, so keep working hard and sharpen its beak to participate in the battle.

Extended data:

Synonyms: Perseverance, selflessness, forge ahead, forge ahead, make persistent efforts, prepare for battle, sharpen your knife, be eager to try, make further progress, be prepared for battle, persevere, make unremitting efforts, overcome difficulties, strive for the upper reaches and impact the middle reaches.

Self-reliance: self-reliance, change life, and strive to change life. Describe what you have done independently. Mao Zedong? The situation after War of Resistance against Japanese Aggression's victory and our policy: What is the basis of our policy? On the basis of one's own strength, it is called self-reliance.

References:

Baidu Encyclopedia-Make persistent efforts