From China Information Center (cicus.org):
Reliable source said Dr. Jiang Yanyong was freed from the “double regulations” under which he had spent eight months. On March 22, Dr. Jiang received a notice from the CCP authorities of the army, saying his “double regulations” were lifted henceforth.
Dr. Jiang, however, has not been completely free, because the notice also listed some rules he must observe. For example, he is not allowed to be interviewed by media, nor can he apply for going abroad without first getting a special grant from the authorities of the army.
Dr. Jiang’s partial freedom came along while US Secretary of State Condoleezza Rice was visiting Beijing, arousing speculations what Beijing has done is more for diplomatic show than for actual improvement of human rights.
In February 2004, Dr. Jiang wrote a letter to the Chair of the National People’s Congress detailing his experiences as a surgeon on duty the night the troops started killing the students in Beijing, and calling for a reassessment of the June 4th Incident.