Terry Crossman patrols streets in Beijing's Xicheng district as a public security volunteer.[Photo/VCG]
In video footage that recently went viral, Crossman said that he initially saw the group as busybodies, but his opinion changed once he was on the inside.
"I like helping others," he said. "I live in the hutong and my neighbors and I usually help each other ... This is where I live, where my friends are and where I call home."
The units are part of many steps Saudi Arabia has been taken to reform the national economy, including the last year series of arrests that covered princes and sitting and former ministers in corruption-related cases.
The Defense Ministry, responding to a journalist's question in an online statement about the issue, demanded that the US "halt all forms of military links between the United States and Taiwan, as well as all forms of weapon sales to Taiwan".
The defensive system of the city has been damaged, said Chu, adding that the findings have revealed the layout of the city and also provided new evidence which will be very helpful for research into ethnic minorities in ancient times.