I found a Reuters article about 14 people who have gone through great lengths to seek asylum in China from North Korea. According to cnn.com, this group went as far as getting through a barbed wire fence and scaling a wall in trying to seek asylum. In the last month, 44 people have tried to seek asylum. These refugees go to various foriegn embassies in Beijing, last month these refugees literally lept into the Canadian embassy after scaling a fence.
You can find the article here: