It's Tang Hui's lawyer, Pu Zhiqiang.
Yesterday, @ Ping An Beijing released a message in Weibo: With the approval of the procuratorate, on June 3, 20 14, the Beijing Municipal Public Security Bureau approved the arrest of Pu Zhiqiang on suspicion of stirring up trouble and illegally obtaining citizens' personal information. Other criminal facts suspected by Pu Zhiqiang are under further investigation by the public security organs.
Lawyer Pu Zhiqiang has acted as an agent in the cases of reeducation through labor and "petitioning mothers". On May 7th this year, the Beijing News reporter confirmed from various channels that lawyer Pu Zhiqiang was criminally detained by Haidian Branch of Beijing Public Security Bureau on suspicion of stirring up trouble and was detained in Beijing No.1 Detention Center.
Pu Zhiqiang, lawyer and managing partner of Beijing Huayi Law Firm. Qu, a lawyer of Huayi Law Firm, is Pu Zhiqiang's niece. Qu said that on the morning of May 5, Pu Zhiqiang was taken away by the police to cooperate with the investigation, but he was taken away by the police after taking the computer. (According to the Beijing News Zhongxin)