《太平广记·卷二十九·神仙二十九》
年长日久，遍身长出了绿毛，已经得到了长生不死的道术了。
年深代久，遍身生此绿毛，已得长生不死之道矣。 
As the years passed, green hair grew all over my body, and I had already attained the Daoist technique of immortality.
<s>[INST] Kindly elucidate the central themes in this passage in English: 年深代久，遍身生此绿毛，已得长生不死之道矣。  [/INST] As the years passed, green hair grew all over my body, and I had already attained the Daoist technique of immortality.</s>
Kindly elucidate the central themes in this passage in English: 年深代久，遍身生此绿毛，已得长生不死之道矣。
user
As the years passed, green hair grew all over my body, and I had already attained the Daoist technique of immortality.
assistant