杞宋无征 is an idiom

杞宋无征qǐ sòng wú zhēng

指资料不足，不能证明。

Origin 《论语·八佾》：“夏礼吾能言之，杞不足征也；殷礼吾能言之，宋不足征也。文献不足故也。”

Word breakdown for “杞宋无征”: Open in Reader →

1.Qi, a Zhou Dynasty vassal state2.surname Qi

1.Chinese wolfberry shrub (Lycium chinense)2.willow

1.surname Song2.the Song dynasty (960–1279)3.Song of the Southern Dynasties (420–479) 南朝宋[nán cháo sòng]

used in 南无[nā mó]

无無HSK 4

1.not to have2.no3.none4.not+3 more +4 more

征HSK 7–9

1.journey2.trip3.expedition4.to go on long campaign+1 more +2 more

征徵HSK 7–9

1.to invite2.to recruit3.to levy (taxes)4.to draft (troops)+4 more +5 more