If you want to learn something about ancient civilization, the story or information of oracle bone script may attract your attentions.
Oracle bone script (甲骨文) refers to incised (or, rarely, brush-written) ancient Chinese characters found on oracle bones, which were animal bones or turtle shells used in divination during the Bronze Age of China. The vast majority record the pyromantic divinations of the royal house of the late Shang dynasty at the capital of Yin (modern Anyang, Henan Province); dating of the Anyang examples of oracle bone script varies from ca.14th-11thcenturies BC to ca. 1200-1050 BC. Very few oracle bone writings date to the beginning of the subsequent Zhou Dynasty, because pyromancy fell from favor and divining with milfoil became more common. The late Shang oracle bone writings, along with a few contemporary characters in a different style cast in bronzes, constitute the earliest significant corpus of Chinese writing, which is essential for the study of Chinese etymology, as Shang writing is directly ancestral to the modern Chinese script. It is also the oldest known member and ancestor of the Chinese family of scripts.
Because turtle shells as well as bones were used, the oracle bone script is also sometimes called shell and bone script. As the majority of oracle bones bearing writing date to the late Shang dynasty, oracle bone script essentially refers to a Shang script.
Precursors
It is certain that Shang-lineage writing underwent a period of development before the Anyang oracle bone script, because of its mature nature. However, no significant quantity of clearly identifiable writing from before or during the early to middle Shang cultural period has been discovered. The few Neolithic symbols found on pottery, jade, or bone at a variety of cultural sites in China are very controversial, and there is no consensus that any of them are directly related to the Shang oracle bone script.
Structure and function
Despite the relatively pictorial appearance of the oracle bone script, it is in fact a fully functional and fairly mature writing system, i.e., able to record the Old Chinese language in its entirety and not just isolated kinds of meaning. This level of maturity clearly implies an earlier period of development of at least several hundred years. From their presumed origins as pictographs and signs, by the Shang dynasty, most graphs were already conventionalized in such a simplified fashion that the meanings of many of the pictographs are not immediately apparent. Compare, for instance, the third and fourth graphs in the row below.
By the late Shang oracle bone script, the graphs had already evolved into a variety of mostly non-pictographic functions, including all the major types of Chinese characters now in use. Phonetic loan graphs, semantic-phonetic compounds, and associative compounds were already common. One structural and functional analysis of the oracle bone characters found that they were 23% pictographs, 2% simple indicatives, 32% associative compounds, 11% phonetic loans, 27% phonetic-semantic compounds, and 6% uncertain.
Despite its status as a fully functional and fairly mature writing system, the oracle bone script is not actually 100% mature – the form of a very few graphs changes depending on context, and occasionally the order of the graphs does not quite match that of the language. By the early Western Zhou period, these traits had vanished, but in both periods, the script was not highly regular or standardized; variant forms of graphs abound (see the many ways to write yín (寅) the 3rd Earthly Branch to the left), and the size and orientation of graphs is also irregular. A graph when inverted horizontally generally refers to the same word, and additional components are sometimes present without changing the meaning. These irregularities persisted until the standardization of the seal script in the Qin dynasty.
