"Emerging Fault Lines in Sino-Burmese Relations"

This article (see here) has a interesting and detailed review of the current situation.

China’s economic penetration of Burma deepened in the first decade of the twenty-first century
as the West tightened economic sanctions against the regime. Bilateral commerce reached 
$2.4 billion in 2007-2008, accounting for a quarter of all Burma’s foreign trade and a 60 per cent
increase over what it was three years ago (Mizzima News, October 24, 2008). Chinese companies
have invested heavily in the country’s manufacturing, mining, power generation and energy 
sectors, and in 2008-2009 China emerged as Burma’s number one investor, pumping $856 million
into the country, or 87 percent of all foreign investments (Deutsche Presse-Agentur, July 14).

Close relations with Burma have also enabled China to improve its energy security situation.
In March, after several years of negotiations, an agreement was signed to build twin oil and 
gas pipelines from the port of Kyaukphyu in Arakan State to Kunming, Yunnan Province. 
Construction of the 1,200 mile pipelines is scheduled to begin this month, with China footing 
the $2.5 billion bill. When completed in 2013, the pipelines will not only be used to transport 
oil and gas from Burma’s offshore energy fields to the PRC, but also from the Middle East 
and Africa, thereby bypassing the Strait of Malacca, which Chinese strategists view as a 
strategic vulnerability (China Brief, April 12, 2006).
The most important ceasefire group to reject the SPDC’s demand is the United Wa State 
Army (UWSA) which has an estimated 20,000 men under arms. Formerly the shock troops 
of the BCP, China has maintained close links to the UWSA over the past two decades. 
The U.S. government labeled the UWSA a narcotic trafficking organization on May 29, 2003.
Chinese businessmen have extensive commercial interests in the Wa region (both legal 
and illegal) and the area provides a conduit into Burma proper: according to some 
estimates, one to two million Chinese citizens have taken up residency in the country 
and now dominate the commercial life of Upper Burma centered on Mandalay. Over the 
years, China has ensured a steady supply of weapons to the UWSA, including shoulder 
fired surface to air missiles, artillery and anti-aircraft guns (Jane’s Intelligence Review, 
March 2008). Moreover, Beijing has been able to use its influence with UWSA leaders to 
redirect the flow of illegal narcotics produced in the Wa area, including 
methamphetamines, away from China and into Thailand, Laos and Cambodia [2]. 
Nevertheless, narcotics produced in Burma continue to find their way into southwest 
China, fueling a major drug addiction problem there.

Interesting...