Investigation and research of repatriation of Japanese via Huludao 并列题名：Investigation and research of repatriation of Japanese via Huludao Investigation and research on ancestral temples in Yunnan Investigation and research on the aspect of Chinese dialects in Guangxi Investigation and Research on Japanese Orphans Investigation and research on governance of global security Investigation and research on rural construction in Hainan Investigation and research on the Chinese antique maps Investigation and research on freshwater fish resources of Guangdong Investigation and research on Gaoping temple theatre