Zhang Jizhi's 61-year-old book "Diamond Sutra" Zhang Jizhi's 61-year-old book "Diamond Sutra" Zhang Jizhi's 61-year-old book "Diamond Sutra" Zhang Jizhi's 61-year-old book "Diamond Sutra" Zhang Jizhi's 61-year-old book "Diamond Sutra" Zhang Jizhi's 61-year-old book "Diamond Sutra"