Which version is the best, Historical Records, Zitongzhi Bamboo Slips and Yijing?

The Historical Records recommended by Zhonghua Book Company is the Historical Records in the series of Sinology Library of China, which is simplified.

The Book of Changes recommended the Book of Changes published by Shanghai Ancient Books Publishing House.

There is no better simplified Chinese version of Zi Tong Zhi Jian, so you can buy it when the series of Chinese Sinology Library of Zhonghua Book Company comes out.

The two books mentioned above can be bought in Dangdang and Joyo, JD.COM.