There are also some extremely complex characters which have understandably become rather rare. According to Joël Bellassen (1989), the most complex Chinese character is /𪚥 (U+2A6A5) zhé  listen (help·info), meaning "verbose" and containing sixty-four strokes; this character fell from use around the 5th century. It might be argued, however, that while containing the most strokes, it is not necessarily the most complex character (in terms of difficulty), as it simply requires writing the same sixteen-stroke character 龍 lóng (lit. "dragon") four times in the space for one. Another 64-stroke character is /𠔻 (U+2053B) zhèng composed of 興 xīng/xìng (lit. "flourish") four times.

What have become more rare?