《南齐书·志·卷九》
晋武帝服丧，每每存有平息悲哀的想法，不完全依照服丧礼制，至于一年四季的祭祀，大都以哀痛不能承受为由，没有马上改变旧的制度。
晋武在丧，每欲存宁戚之怀，不全依谅暗之典；至于四时蒸尝，盖以哀疾未堪，非便顿改旧式。
Emperor Wu of Jin mourned, always with the idea of calming his grief, not entirely in accordance with the mourning rituals, and as for the sacrifices of the four seasons, mostly because of unbearable grief, he did not change the old system immediately.
<s>[INST] Kindly elucidate the central themes in this passage in English: 晋武在丧，每欲存宁戚之怀，不全依谅暗之典；至于四时蒸尝，盖以哀疾未堪，非便顿改旧式。 [/INST] Emperor Wu of Jin mourned, always with the idea of calming his grief, not entirely in accordance with the mourning rituals, and as for the sacrifices of the four seasons, mostly because of unbearable grief, he did not change the old system immediately.</s>
Kindly elucidate the central themes in this passage in English: 晋武在丧，每欲存宁戚之怀，不全依谅暗之典；至于四时蒸尝，盖以哀疾未堪，非便顿改旧式。
user
Emperor Wu of Jin mourned, always with the idea of calming his grief, not entirely in accordance with the mourning rituals, and as for the sacrifices of the four seasons, mostly because of unbearable grief, he did not change the old system immediately.
assistant