母子 mǔzǐ HSK6 mother and child Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: principal and interest All meanings 3 mǔzǐ 3 mother and child 1parent and subsidiary 1principal and interest 1 1 sentence for 母子 (mǔzǐ — principal and interest) 这笔欠款必须母子一并清偿,不能拖延。 zhè bǐ qiànkuǎn bìxū mǔzǐ yībìng qīngcháng, bù néng tuōyán. This debt must be settled by both the mother and the son together, and no delay is allowed. Source: Dong Chinese Dictionary