T: 置之不理 S: 置之不理 [zhi4 zhi1 bu4 li3] = to ignore, to pay no attention
他以為那是幻覺所以置之不理。
他以为那是幻觉所以置之不理。
ta1 yi3 wei2 na4 shi4 huan4 jue2 suo3 yi3 zhi4 zhi1 bu4 li3.
He thought that it was an illusion so he ignored it.
https://www.learnwitholiver.com/chinese/daily-sentence-477