Ancient Chinese Contributions. Essay. To win a trip to China, you enter a contest to determine the four most useful contributions or inventions created by the ancient Chinese. (1) Identify eight to ten of these useful inventions or contributions. (2) Nominate four that you believe are the most ingenious or innovative. (3) Explain why you believe these four inventions or contributions are the most useful inventions or contributions from the ancient Chinese. (4) Identify one invention or contribution that you cannot live without and explain why.