+747+. The reflective movement (which must have begun long before the sixth century B.C., the period of Confucius and Lao-tsze) is marked by the attempt to perfect the social organization, regard being paid mainly to visible, practical relations. Stress is laid on the principle of order in family and state, which is held to reflect the order of the universe;[1295] speculation is avoided, there is a minimum of religion. In the more developed religious system the two prominent features are, first, the dominant conception of the unity of the family and of the state led to the emphasizing of the worship of ancestors--a cult which, going back to a very early time, has been interwoven in China with the individual and communal life in a thoroughgoing way, with a constant infusion of moral ideas; and in the next place, the order of society and of the external world is represented by Heaven.[1296] +748+. Originally, doubtless, Heaven was the physical sky (as among the Hindus and Persians and many other peoples), but at an early period came to be practically the supreme god. A sort of monotheistic cult has thus been established as the official religion. The emperor is the Son of Heaven and the High Priest of the nation, and in the great annual sacrifices performed by him the host of minor powers is practically ignored and worship is addressed to the controlling powers of the world. This official worship does not set aside the cult of the various spirits, whose existence is recognized by the minor officials as well as by the people. The cult of local spirits has grown to extraordinary dimensions. They fill the land, controlling the conditions of life and demanding constant regard; and the experts, who are supposed to know the laws governing the action of the spirits (for example, as to proper burial-places), wield enormous power, and make enormous charges of money. These spirits are treated as of subordinate importance in the official religion. The process by which China has reached this religious attitude must have extended over millenniums, and, as is stated above, the intellectual movement in the direction of simplicity and clearness has been attended by an advance in ethical purity.