Complex sentence: All the accepted students start to become close friends and proficient in their kung fu, except for Fang Shih Yu (who is unknowingly learning tiger boxing but is impatient) keeps getting into fights with Ma Fu Yi, who is disgruntled with being at Shaolin.
Split into simpler sentences: All the accepted students become close friends and proficient in their kung fu, except for Fang Shih Yu (who is unknowingly learning tiger boxing but is impatient). He keeps getting into fights with Ma Fu Yi, who is disgruntled with being at Shaolin.