Liu Jianzhi, in 1997, began to engage in research on the clothing human body and draping cutting mannequins and the principles of clothing plate formation, and developed and produced draping cutting mannequins that conformed to my country's human body shape standards. From 1999 to 2002, he served as the technical director of Tianjin Saint-Laud brand. In 2003, he taught at Beijing Aifati Fashion Design Institute. In 2004, he opened the "Qinhuangdao Liu Jianzhi Clothing to Taiwan and Pattern Research and Development Studio". In the same year, he registered the "Jianzhi" brand trademark and applied for a national utility model patent.