The price of Zhang Youdao's works

Calligrapher Zhang Youdao once spoke for the Central Party School and Tsinghua University, and his works are also collected by Malaysian Embassy, Singaporean Embassy and Great Hall of the People. In 2002, he collected his 4-foot works, which are now valuable. Thanks for the early collection, the normal market price is about 10 thousand, and the price will be higher if it is auctioned!