‎Rizal's most important stay in Hong Kong lasted from November 1891 to June 1892. He left Europe after the publication of El Filibusterismo due to political differences with fellow propagandists in Spain and a desire to be closer to the Philippines.

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‎Medical Practice and Family

• ‎Profession: Rizal established himself as a successful Ophthalmic Surgeon (Eye Doctor).

• ‎He opened his clinic at 2 D'Aguilar Street, and later resided with his family at 2 Rednaxela Terrace.

• ‎Family Reunion: Before Christmas of 1891, he was reunited with his parents, brother Paciano, and several sisters who had been unjustly deported from Calamba by Spanish authorities.

• ‎Successful Surgery: One of his most notable medical achievements was successfully operating on his mother, Doña Teodora Alonso's, eye to restore her sight.

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‎Political and Social Planning

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• ‎The Borneo Colonization Project: Distressed by the persecution of the Calamba tenants, Rizal conceived the idea of establishing a Filipino colony in North Borneo (Sabah), which he called "New Calamba."

• ‎He negotiated with the British authorities in Sandakan, Borneo, who were willing to give 100,000 acres of land.

• ‎However, the project was ultimately rejected by the new Spanish Governor-General of the Philippines, Eulogio Despujol.

• ‎Founding of La Liga Filipina: Rizal wrote the Constitution and By-Laws of La Liga Filipina (The Philippine League) during his time in Hong Kong, a non-violent civic organization intended to unite the archipelago and promote reforms.

• ‎Return to Manila: Despite warnings from his friends, Rizal decided to return to Manila in June 1892 to personally discuss the Borneo project with Despujol, establish the La Liga Filipina, and prove to his critics (like Eduardo de Lete) that he had not abandoned the country's cause. He knew the risk and wrote two letters—one for his family and one for the Filipino people—to be opened after his death.

• ‎His decision to return to the Philippines directly led to his arrest, exile to Dapitan, and eventual martyrdom.