《旧五代史·其它·外国列传一》
契丹王德光对他母亲说 ：儿昨夜晚上做梦看见太原石郎派使者来到我国，今天果然来到了，事情合符天意，必须派兵救援他。 
德光白其母曰： 兒昨梦太原石郎发使到国，今果至矣，事符天意，必须赴之。 
The king of Khitan, Deguang, said to his mother: "My son dreamed last night that the envoy of Taiyuan Shilang came to our country. Today, he came as expected. Things are in accordance with God's will. We must send troops to help him."
<s>[INST] Identify the key themes in this Classical Chinese text and explain them in English: 德光白其母曰： 兒昨梦太原石郎发使到国，今果至矣，事符天意，必须赴之。  [/INST] The king of Khitan, Deguang, said to his mother: "My son dreamed last night that the envoy of Taiyuan Shilang came to our country. Today, he came as expected. Things are in accordance with God's will. We must send troops to help him."</s>
Identify the key themes in this Classical Chinese text and explain them in English: 德光白其母曰： 兒昨梦太原石郎发使到国，今果至矣，事符天意，必须赴之。
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The king of Khitan, Deguang, said to his mother: "My son dreamed last night that the envoy of Taiyuan Shilang came to our country. Today, he came as expected. Things are in accordance with God's will. We must send troops to help him."
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