Complex sentence: After the surrender of the Japanese, the building was bought by the Selangor State Government and after being renovated, it became the palace of His Majesty the Sultan of Selangor until 1957.
Split into simpler sentences: After the surrender of the Japanese, the building was bought by the Selangor State Government. It was then renovated to become the palace of His Majesty the Sultan of Selangor until 1957.