Another of Xianzhi's accomplishments is the extensive application of the "one-stroke writing" technique for (cursive script), historically (though perhaps incorrectly) attributed to Zhang Zhi (張芝) of the Late Han, which strings together several characters (typically three to four) into a single stroke or renders a complex character in a rather convoluted single stroke.

Until the Tang dynasty, Wang Xianzhi's influence and reputation largely surpassed that of his father.

Wang Xizhi noticed Xianzhi's talent early on and started training him in calligraphy at around the age of seven.

Being amazed at Xianzhi's strong grip, Wang Xizhi remarked, "This son of mine is destined for fame!"

Wang Xianzhi continued to practice diligently into adulthood until finally becoming as skilled as his father.