Analysts see Chinese-operated listening posts in Myanmar 's Coco Islands , China 's support for a port near Yangon for handling 10,000-ton ships -LRB- of which the Burmese have only a few -RRB- and another deep-water port at Kyaukpyu in western Myanmar , Chinese aid to the Bangladeshi port of Chittagong and plans to improve Cambodia 's Sihanoukville as part of an incremental effort to build a '' string of pearls '' presence on the Indian Ocean rim .