I found an excerpt of the prayers that the Emperor of China would say to Shang-Di.
‘To Thee, O mysteriously-working Maker, I look up in thought. … With the great ceremonies I reverently honor Thee. Thy servant, I am but a reed or willow; my heart is but that of an ant; yet have I received Thy favouring decree, appointing me to the government of the empire. I deeply cherish a sense of my ignorance and blindness, and am afraid, lest I prove unworthy of Thy great favours. Therefore will I observe all the rules and statutes, striving, insignificant as I am, to discharge my loyal duty. Far distant here, I look up to Thy heavenly palace. Come in Thy precious chariot to the altar. Thy servant, I bow my head to the earth reverently, expecting Thine abundant grace. … O that Thou wouldest vouchsafe to accept our offerings, and regard us, while thus we worship Thee, whose goodness is inexhaustible!
And also,
‘Of old in the beginning, there was the great chaos, without form and dark. The five elements [planets] had not begun to revolve, nor the sun and moon to shine. You, O Spiritual Sovereign, first divided the grosser parts from the purer. You made heaven. You made earth. You made man. All things with their reproducing power got their being’
And
***‘When Te [ShangDi], the Lord, had so decreed, He called into existence [originated] heaven, earth, and man. Between heaven and earth He separately placed in order men and things, all overspread by the heavens.’ ***
Now sure, there’s no mention of Abraham, Isaac or Jacob. Nothing about the Blessed Trinity. But do you honestly believe that these people did not worship the One True God?