Complex sentence: The Japanese and Chinese traditions in particular required the use of hundreds of types of joints, since the nails and glues used did not stand up well to the vastly fluctuation temperatures and humid weather conditions in most of Central and South-East Asia.
Split into simpler sentences: The Japanese and Chinese traditions in particular required the use of hundreds of types of joints. The reason was that nails and glues used did not stand up well to the vastly fluctuation temperatures and humid weather conditions in most of Central and South-East Asia.