Complex sentence: The term generally signifies the Western orchestral instrument, though it is related to the' ban time-beaters used by the Han Chinese, which is why the Western instrument is sometimes referred to as "Chinese woodblock".
Split into simpler sentences: The term generally signifies the Western orchestral instrument, though it is related to the time-beaters used by the Han Chinese and called "ban". For this reason, the Western instrument is sometimes referred to as "Chinese woodblock".