The 38-year-old scholar was able to find insiders by chitchatting with the workers in a friendly way either in restaurants, foot massage parlors, KTV or football fields.

• 在餐厅、在洗脚屋、在KTV，以及在足球场里，这位38岁的学者以“朋友聊天式的非正规访谈”找到了知情者。