sichuan provincial women's prison (四川省女子监狱 "sìchuān shěng nǚzǐ jiānyù") is a women's prison in yangma town (养马镇), jianyang, ziyang, sichuan, away from chengdu. it is over large. it became a women's prison in 1998. the sichuan provincial administration of prisons operates this facility.