A pair of giant pandas will soon make the journey from China to the U.S., where they will be cared for at the San Diego Zoo. It’s all part of an ongoing conservation partnership between the two nations. The San Diego Zoo Wildlife Alliance said Monday that its caretakers recently visited China to meet the giant pandas, Yun Chuan and Xin Bao. An exact date for the handoff hasn’t been set. Yun Chuan is a mild-mannered male panda nearly 5 years old. Xin Bao is a nearly 4-year-old female described as a gentle introvert.