Complex sentence: While repairing the pagoda in 1974, renovators found Liao Dynasty texts of Buddhist sutras and other documents that were printed, attesting to the widespread technological use of movable type printing that developed within the neighboring Song Dynasty.
Split into simpler sentences: While repairing the pagoda in 1974, renovators found Liao Dynasty texts of Buddhist sutras and other documents. This attests to the widespread technological use of movable type printing that developed within the neighboring Song Dynasty.