Islamic Iran and the six powers have reached a historical agree on nuclear disarmament a couple of minutes ago. There is another issue behind their diplomatic progress that is China issue. These two years, many economic and/or political turmoils have ruptures in Europe, Middle East Asia, South Asia. Among those problems, Iran's challenge to the World peace was more focused than other issues including the aggressive China's military extensions. China issue surely forced seven diplomatic delegates to take a forward step for the pact. Anyhow, China should be eyed as the next spot for open discussion.