in Chinese schools to counter Character amnesia brought on by technology usage. In recent study, Chinese calligraphy writing have been used as cognitive intervention strategy among older adults or people with mild cognitive impairment. For example, in a recent randomized control trial experiment, calligraphy writing enhanced both working memory and attention control compared to controlled groups. In contemporary China, a small but significant number of practitioners have made calligraphy their profession, and provincial and national professional societies exist, membership in which conferring considerable prestige. By tradition, the price of a particular artist's work is priced in terms of the length of paper on which it is written. Works by well-regarded contemporary calligraphers may fetch thousands to tens of thousands of yuan (renminbi) per chi (a unit of length, roughly equal to a foot) of artwork. As with other artwork, the economic value of calligraphy has increased in recent years as the newly-rich in China search for safe investments for their wealth. Rules of modern calligraphy While appreciating calligraphy will depend on individual preferences, there are established traditional rules and those who repeatedly violate them are not considered legitimate calligraphers. The famous modern Chinese calligrapher Tian Yunzhang, member of the Chinese Calligrapher Association, summarized rules of modern calligraphy. The following rules are from One Question Every Day, One Word Every Day ( a calligraphy video column lectured by Tian Yunzhang, in which Tian made deep analysis of different characters. Among these rules are: The characters must be written correctly. A correctly written character is composed in a way that is accepted as correct by legitimate calligraphers. Calligraphic works often use variant Chinese characters, which are deemed correct or incorrect case-by-case, but in general, more popular variants are more likely to be correct. Correct characters are written in the traditional stroke order and not a modern standard. The characters must be legible. As calligraphy is the method of writing well, a calligraphic work must be recognizable as script, and furthermore be easily legible to those familiar with the script style, although it may be illegible to those unfamiliar with the script style. For example, many people cannot read cursive, but a calligraphic work in cursive can still be considered good if those familiar with cursive can read it. The characters must be concise. This is in contrast to Western calligraphy where flourishes are acceptable and often desirable. Good Chinese calligraphy must be