Taiwan (with an area of 36,000 square kilometers/ 22,500 square miles) is the largest. Hainan Island (about 34,000 square kilometers /21,250 square miles) is the second-largest island, but it is the largest which is fully under the jurisdiction of China.
Continuous integration is a software development practice where developers regularly merge their code changes into a central repository, after which automated builds and tests are run.
Continuous integration is not only a server that builds, but a management/organizational process that should work. Being a process that works means exactly what Jez Humble said in Continuous Delivery: Reliable Software Releases through Build, Test, and Deployment Automation, on page 55: