Wu Long sat in one of the backrooms of the building the Thousand Eyes Palace used for their operations in the Silver Wing City. Unlike Madam Liang who could arrive here and leave anytime with Fen Baihu's help, he had to sneak in, as his body now instinctively rejected the Celestial Fox's powers.
He was having small talk with Madam Liang while his eyes observed what happened in the building around them and on the streets adjacent to the building.
Just like they did on the Three Continents, the Thousand Eyes Palace didn't store any information on the premises, the actual bureau that stored and distributed that information was located in the Oak Fortress, while the clerks in this building communicated what information they needed, receiving it through the artifacts that burnt text into scrolls remotely.