Complex sentence: After an investigation, Wong learns that the Shaolin students based in the library, led by Mo-gan, have studied abroad in Europe before, and they are very dissatisfied with the temple's rules, so they attempted to assassinate the abbot and reform Shaolin.
Split into simpler sentences: After an investigation, Wong learns that some Shaolin students, led by Mo-gan, have studied abroad in Europe before. They are very dissatisfied with the temple's rules, so they attempted to assassinate the abbot and reform Shaolin.