However, due to archaeologists' repeated requests for permission to conduct surveys on these mausoleums, researchers are often allowed to enter mausoleums in recent years to conduct joint research with local communities or to participate in repair surveys.
しかしながら調査の許可を求める考古学界の要望もあり、近年は地元自治体などとの合同調査を認めたり、修復のための調査に一部研究者の立ち入りを認めるケースも出てきている。