《北史·本记·卷七》
宣帝还把杨放到棺材里，用治丧的车拉着走，好几回都打算把钉子钉上。
又置愔于棺中，载以轜车，几下钉者数四。
Emperor Xuan put Yang into the coffin and hauled the hearse several times before driving the nail in.
<s>[INST] Kindly elucidate the central themes in this passage in English: 又置愔于棺中，载以轜车，几下钉者数四。 [/INST] Emperor Xuan put Yang into the coffin and hauled the hearse several times before driving the nail in.</s>
Kindly elucidate the central themes in this passage in English: 又置愔于棺中，载以轜车，几下钉者数四。
user
Emperor Xuan put Yang into the coffin and hauled the hearse several times before driving the nail in.
assistant