Is it true that primary school students' hard-pen calligraphy works are collected by the Palace Museum?

No, according to the official website search of the Palace Museum, as of February 23, 2023, the Palace Museum has not released the news of collecting hard-pen calligraphy works for primary school students, so it is not true. The Forbidden City is a special museum. The Palace Museum, founded in 1925, is based on the Forbidden City in Ming and Qing Dynasties.