A single global scale on the entire head model is fine (e. g. to convert feet to meters, or to shrink or grow the player), but do not scale head motion independent of interpupillary distance (IPD).
To explore the "mother Secretary e" Fangding the bronze, 1.33 meters high, weight 875 kg, is China's largest so far found that the bronze ware, bronze culture in the world is rare.