Which expert helped me write the preface to the book China Jokes?

Chinese characters. This familiar thing that can no longer be familiar can be seen almost every day. As one of the oldest languages still active in the world, Chinese characters have condensed the sweat and wisdom of countless generations of China people from ancient times to the present. In this way, Chinese characters naturally reveal some characteristics of the Chinese nation, either hardworking or strong. But perhaps no one has ever noticed the humor of Chinese characters. Throughout the ages, countless literati like to enjoy couplets and poems, but the unique humor of Chinese characters is the most fundamental reason why couplets and poems can attract literati.