tā sānshí suì nà nián yìrán cízhí, hé liǎng gè péngyou yīqǐ chuàngbànle zhè jiā gōngsī

他三十岁那年毅然辞职，和两个朋友一起创办了这家公司。

At thirty, he resolutely quit his job and founded this company together with two friends.