Complex sentence: They also presented a 4-magic square of order 256 in January 2003, and another 5-magic square, of order 729, was constructed in June 2003 by Chinese mathematician Li Wen.
Split into simpler sentences: They also presented a smaller 4-magic square of order 256 in January 2003. Another 5-magic square, of order 729, was constructed in June 2003 by Chinese mathematician Li Wen.