Mom kept trying to convince him from every angle, but the child still refused to take the medicine.
Tips
history
Recorded in the Song-dynasty Chan Buddhist text 《景德传灯录》 (Jǐngdé Chuándēnglù), where Master Xiyun says even the Fourth Patriarch's disciple 'explained crosswise and lengthwise yet still missed the deeper turning point'.
memory
横 ('horizontal') + 竖 ('vertical') = covering every direction — like saying 'I explained it sideways and upside down'.
