《资治通鉴·宋纪·宋纪一》
将士们想要保护毛德祖突围，毛德祖说： 我发誓与此城一同毁灭，大义所在，我不能使城陷而我仍然生存。 
德祖曰： 我誓与此城俱毙，义不使城亡而身存也！ 
The soldiers wanted to protect Mao Dezu and break through the siege. Mao Dezu said: I swear to die with this city. It is a matter of righteousness. I cannot let the city fall and I still survive.
<s>[INST] Explain the meaning of this Classical Chinese passage in English: 德祖曰： 我誓与此城俱毙，义不使城亡而身存也！  [/INST] The soldiers wanted to protect Mao Dezu and break through the siege. Mao Dezu said: I swear to die with this city. It is a matter of righteousness. I cannot let the city fall and I still survive.</s>
Explain the meaning of this Classical Chinese passage in English: 德祖曰： 我誓与此城俱毙，义不使城亡而身存也！
user
The soldiers wanted to protect Mao Dezu and break through the siege. Mao Dezu said: I swear to die with this city. It is a matter of righteousness. I cannot let the city fall and I still survive.
assistant