《旧唐书·本纪·卷十》
再说西戎、北狄两个少数民族，我曾经厚待他们，现在国家的命运艰难，必将会得到他们的帮助，你好自为之吧！ 
且西戎北狄，吾尝厚之，今国步艰难，必得其用，汝其勉之！ 
The two minorities, the Western Rong and the Northern Di, I once treated them well. Now in these hard times for the country, they will certainly come to our aid. You should take care of yourself!"
<s>[INST] Kindly elucidate the central themes in this passage in English: 且西戎北狄，吾尝厚之，今国步艰难，必得其用，汝其勉之！  [/INST] The two minorities, the Western Rong and the Northern Di, I once treated them well. Now in these hard times for the country, they will certainly come to our aid. You should take care of yourself!"</s>
Kindly elucidate the central themes in this passage in English: 且西戎北狄，吾尝厚之，今国步艰难，必得其用，汝其勉之！
user
The two minorities, the Western Rong and the Northern Di, I once treated them well. Now in these hard times for the country, they will certainly come to our aid. You should take care of yourself!"
assistant