The tombs with Nation Protecting Divine Sword and the heirloom seal had one grade one masterpiece and one quest item respectively. It was a secret that everyone knew.
Many people went for those two items when they challenged the royal mausoleum.
Out of the two of them, however, Nation Protecting Divine Sword's tomb was easier to clear. While the eight General Puppets were very difficult to handle, it was basically impossible for them to instantly kill a powerful player on the Dragon Rank or Phoenix Rank.
Hence, there were already a few people in the game who had obtained imperfect versions of Nation Protecting Divine Sword. The price for it reached up to 3,600,000 taels of silver, and it was worth a few masterpieces at once.
There were fewer people who had cast their eyes on the heirloom seal!