L u Yiwen is a co-founder of DR Corporation (Darry Ring), a Chinese jewelry brand famous for its marketing gimmick that allows men to purchase only one engagement ring in their lifetime, symbolizing "true love." She co-founded the company with her husband, Zhang Guotao, in 2010. The brand's romantic concept resonated deeply with young Chinese consumers, fueling rapid growth.

Based in Shenzhen, DR Corp went public on the Shenzhen Stock Exchange in 2021. Lu has been instrumental in the brand's marketing and image building. Despite some controversy surrounding its marketing claims, the company remains a major player in China's bridal jewelry market. Lu's wealth comes from her significant co-ownership of the listed entity.