Li solved these problems by applying a special adhesive to the base of the brush and by replacing the resin used for fixing the brush to the socket, with a new waterproof chemical glue.
李志仁根據韋誕「筆經」上記載的制筆法：「桀者居前，毳者居後；強者為刃，軟者為輔……」之說，加上本身經驗，使他深知筆性的確切掌握，在於筆毛的調配。