About 20%-30%. According to the information of official website of Guangzhou University, the proportion of landscape architecture re-examination is about 20%-30%. Guangzhou University (established with the approval of the Ministry of Education, the school-running system is a * * * comprehensive university jointly built by provinces and cities, with the city as the mainstay) is a key construction university of high-level universities in Guangdong Province, a "double-class" key construction university in Guangdong Province and a high-level university construction university in Guangzhou.