As early as Xia and Shang Dynasties, what did the ancients use for divination?

As early as the Xia and Shang Dynasties, the ancients used tortoise shells for divination.

Oracle Bone Inscriptions is the abbreviation of tortoise shell and animal bones, also known as tortoise shell, Oracle Bone Inscriptions, Oracle, Wen Qi and Yin Qi. It is the earliest mature writing found in the Bronze Age (about BC 1339- 128 1 year) in which activities such as divination and sacrifice were recorded on tortoise shells, animal bones and human bones in Shang Dynasty. /kloc-It was unearthed in Xiaotun, Anyang, Henan Province at the end of 0/9, and was called "Yin Ruins" in history. Oracle Bone Inscriptions has possessed the three basic elements of China's calligraphy, namely, writing, writing and composition, and has formed a solemn and solemn calligraphy style, which is the oldest and most extreme calligraphy style. Burning tortoise shells to predict good or bad luck is the main way for wizards in Shang Dynasty to predict good or bad luck. This discovery shows that the Central Plains culture had spread to Hefei at that time.

The tortoise shell used by Yin Wuding for divination) Because the Shang king knew almost everything, the contents of Oracle bone inscriptions involved all fields of Shang society. According to the information about the Shang class and country in Oracle Bone Inscriptions, slaves and civilians in Shang Dynasty were composed of the masses, peasants, Qiang people, servants and concubines. Slave owners and nobles are composed of people with different identities, such as the first man, the first king and their spouses, such as Yan, the mother and son, and the son. Officials at all levels include Shang Shu, Yin, Shang Shu, dogs, Asians, horses, archers, Hou, Bo and so on. The army has divisions, brigades, etc. Penalties include chopping, chopping, chopping, chopping and so on, and prison "graves" are also set up. Oracle Bone Inscriptions also recorded the human sacrifice in Shang Dynasty, which is directly related to solving the social nature of Shang Dynasty. The Shang Dynasty often waged wars with foreign countries, and the conquered countries paid tribute to the Shang Dynasty. In Oracle bone inscriptions, it is often recorded that families have come and entered horses, cattle, sheep and turtles.