《北齐书·列传·卷四十七》
他有一孽子叫善昭，性情极其凶狠，和义云的侍女通奸，拷打无数，给他戴上笼头，系在院中树上，用草料喂他，十几天才放下来。
有孽子善昭，性至凶顽，与义云侍婢奸通，搒掠无数，为其笼头，系之庭树，食以□秣，十余日乃释之。
He had an illegitimate son named 善昭, who was also very ill-tempered. He committed adultery with the maidservant of 义云, was tortured countless times, was put in a muzzle and tied up to a tree in the courtyard, and fed with grass. He was only released after ten days.
<s>[INST] Kindly elucidate the central themes in this passage in English: 有孽子善昭，性至凶顽，与义云侍婢奸通，搒掠无数，为其笼头，系之庭树，食以□秣，十余日乃释之。 [/INST] He had an illegitimate son named 善昭, who was also very ill-tempered. He committed adultery with the maidservant of 义云, was tortured countless times, was put in a muzzle and tied up to a tree in the courtyard, and fed with grass. He was only released after ten days.</s>
Kindly elucidate the central themes in this passage in English: 有孽子善昭，性至凶顽，与义云侍婢奸通，搒掠无数，为其笼头，系之庭树，食以□秣，十余日乃释之。
user
He had an illegitimate son named 善昭, who was also very ill-tempered. He committed adultery with the maidservant of 义云, was tortured countless times, was put in a muzzle and tied up to a tree in the courtyard, and fed with grass. He was only released after ten days.
assistant