Complex sentence: At the end of 1941, the Japanese Imperial Army arrived and occupied North Borneo and Sung Siew was compelled to close for the second time until 1946/1947 when it was reopened with the Chinese Section and later the English section.
Split into simpler sentences: At the end of 1941, the Japanese army arrived and occupied North Borneo and Sung Siew was compelled to close for the second time. It reopened in 1946/1947, firstly with the Chinese Section and later the English section.