Rizal returned to the Philippines in 1887 after 5 years abroad. He practiced medicine in Calamba and operated successfully on his mother's eyes. However, his enemies who resented his book Noli Me Tangere persecuted him and threatened his life. Despite warnings not to return, Rizal was determined to serve his oppressed people and understand the impact of his writings. Upon his happy return to Calamba, he was welcomed by his family but had to be protected by his brother from enemy threats. Rizal continued practicing medicine while also facing growing political storms over the controversy caused by Noli Me Tangere.