Xia Qingyuan was cultivating in seclusion and sealed the Pavilion to avoid being disturbed by outsiders. This was a very normal thing to do, and no one suspected anything.
As for the destruction of a few puppets, Han Lin had mentioned before that Xia Qingyuan could use them however she liked. There was nothing wrong with Xia Qingyuan destroying them. She had finished studying them so that no one would investigate.
Perhaps it was because she studied the puppets that Xia Qingyuan had some revelations!
Han Lin thought so, so he did not disturb Xia Qingyuan and instead occupied himself with his own business.