Xi Shen was slightly taken aback by this because despite the main dining room being a good distance away from the front gate, he could clearly hear the knock as it echoed throughout the entirety of the mansion.
Xi Shen thought that whoever was knocking on his front gate had extremely good control of their Spiritual Qi, as he or she was able to transmit the sound of the knock through vibrations in the Surrounding Spiritual Qi at such a wide radius.
However, despite this person’s amazing display of Spiritual Qi control, they were obviously trying to be disrespectful by doing such a thing. And Xi Shen was quite annoyed that someone would be so arrogant as to do something like this.
Either this person didn’t know it was his courtyard, or they knew, but just didn’t care it was his.
After the echoing of the knock died down, Xi Shen turn to Yang Su and said, “Yang Su go and see who that rude guest is.”