According to this record, it is speculated that these two China watches were made in 1742. As for how to move from Yuanmingyuan to Peking University Campus, according to the records in the yenching university school magazine of that year, it was moved here in the early days of the establishment of yenching university. After a hundred years' vicissitudes, this famous China watch has added some elegance and solemnity to the old and young Peking University campus.