青楼满座只因人心寂寞
[qīng lóu măn zuò zhĭ yīn rén xīn jì mò]
'The Brothel is Full because of Lonely Hearts'. Historically, a Qinglou (青楼) was where performers and prostitutes entertained guests. This phrase expresses melancholy, noting human loneliness often leads to seeking solace or connection regardless of its nature.