Li Hailong’s Restoration of Four-Thread Twisted Luo in the 1990s

 Li modified traditional looms with manual twisting heddles and warp-separating rods to prevent tangling, while devising a standardized mnemonic guide to streamline 30+ steps, boosting daily output from <1 cm to 5 cm. Integrating Japanese twisted-thread techniques from commercial orders, they refined parameters and in **1996** successfully recreated  four-thread twisted luo with a warp density of **86 threads/cm**, nearly matching Han Dynasty craftsmanship and bridging a centuries-old gap in China’s silk heritage.