From China Digital Space
非正常方式 (fēi zhèngcháng fāngshì) unusual method
After the escape of Chen Guangcheng to the U.S. embassy, the Chinese government stated that "China expresses its strong dissatisfaction with the unusual method by which Chen Guangcheng was brought into the embassy. America's handling of the situation interfered with China's internal affairs which China will certainly not accept."
For more on the "unusual method" see here