GANZHOU, China (AP) — Chinese authorities have released on bail three activists who had been detained after investigating labor conditions at a factory that produced shoes for Ivanka Trump and other brands. The three activists walked out of a police station in Ganzhou, a city in southeastern Jiangxi province, on Wednesday, the final day of their legally mandated 30-day detention period limit. Hua and his colleagues at the labor group were preparing to publish a report alleging low pay, excessive overtime, crude verbal abuse and possible misuse of student labor at Huajian Group factories. Faced with rising labor unrest and a slowing economy, Beijing has taken a stern approach to activism in southern China's manufacturing belt and to human rights advocates generally, sparking a wave of reports about disappearances, public confessions, forced repatriation and torture in custody.