Between the Shang and Zhou, China was largely feudalistic and expansion wasn't the collective concern as they focused on internal competition. read more
South east asia was simply too faraway and they already offer their tributes to China for protection so colonization is not their priority. Lack of sea navy. China ever since from their foundation had tried to unite the celestial empire under a single centralized government and different dynasties will repeat the same order after the previous dynasty loss their status as the chinese emperor. read more