Probe into Zhang Hua's political career

Zhang Hua was a famous politician and writer in the Western Jin Dynasty.Zhang Hua's political career fell into two periods,in the first of which Emperor Wu was in power and in the second of which Emperor Hui was in power.Zhang Hua's being murdered was objectively due to clique struggle and subjectively due to his own over-cautious personality.His political actions such as sending out troops to attack the Kingdom of Wu,seeking unity and attempting to prevent upheavals are worth affirming.