Complex sentence: In 1933, he met Jigoro Kano, the founder of judo, who encouraged him to continue his study of judo, and chose him to be one of the doors through which the East attempts to meet the West.
Split into simpler sentences: In 1933, he met Jigoro Kano, the founder of judo, who encouraged him to continue his study of judo. Kano chose him to be one of the doors through which the East attempts to meet the West.