Introduction to Ouyuan Historical and Cultural District: This ancient locust tree located in Ouyuan District was planted in the Song Dynasty. It has a circumference of 4.7 meters and is over 1,000 years old. There are more than 400 ancient locust trees existing in Qingzhou area, about half of which were from the Ming Dynasty and before the Ming Dynasty. The oldest tree was planted in the Song Dynasty.
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