Weizi of Song
Weizi, also spelled Wei Tsze, was the first ruler of Song. He was the subject of Chapter 18 of the Analects of Confucius.
Weizi was the eldest son of Di Yi. He was first enfeoffed at Wei, hence Lord of Wei. He was also a half-brother of the last Shang king, Di Xin. Di Xin gave himself over to drinking, women and abandoned morals. Weizi tried to persuade him not to do so, but Di Xin ignored. Subsequently, Weizi resigned and withdrew from the court.
When Zhou dynasty [Battle of Muye|conquered the Shang dynasty|Shang kingdom], Weizi submitted and presented the ritual utensils to King Wu of Zhou. He was pardoned by King Wu.
After Rebellion of the Three Guards was put down, Weizi was enfeoffed as Duke of Song and granted land at Shangqiu, where the capital of the new State of Song was built. After his death, he was succeeded by his younger brother Yan, historically known as Weizhong.
Weizi was honored by Confucius as one of the "three men of virtue" of the Shang, together with Jizi and Bigan. Weizi was entitled by Emperor Shun of Yuan, named Renjing Gong at late of Yuan Dynasty.
Name
His personal name is Qi, ancestral name Zi of the Shang kings and lineage name Song which later was passed down to the Song lords. Weizi is his posthumous name, with zi meaning either "master" or "viscount" and wei meaning "humble." Hence, his title can be fully interpreted as either "Humble Viscount of Song" or "Humble Master of Song."His younger brother inherited the part wei of his posthumous name as, with zhong meaning the "second-born " indicating the former being a younger brother to the latter.