Just because people made sacrafices on alters does not mean they are saved. LISTEN to what the Bible says...
Jesus says himself in John 14:6, "I am the way, the truth, and the life. NO ONE comes to the Father except through ME."
If little Chen has not accepted Jesus (as his personal Lord and Savior) then he cannot go to Heaven.
Jesus says this himself.
This alone states that NO ONE comes to God except through Jesus Christ.
You say,"people in the Old Testament are still saved by faith in Jesus Christ. THEY DID NOT KNOW HIS NAME but they still knew that they were sinners in need of a Savior.
HOW could anyone be saved in the faith of someone when they did not even know that person or being exist or will someday exist?
So, if you keep to this ideology then you have to believe that Abel will go to hell because he did not claim Jesus Christ as his Savior....
Can you repent once you are in Hades ?? or is it too late by then ?