The whole chamber still went deeper today, and I tried to find the clear borders/walls of the chamber.
The vessel found yesterday was further cleaned and was registered as locus 10. It has been broken intendedly before being located in the burial, since the two halves of this vessel overlapped with each other perfectly instead of scattering in the chamber. Two rim pieces of this vessel were exposed in the center of the chamber. Whether this situation is designed or happened accidentally during the filling of the burial is not clear. 5 centimeters beneath these rims, a piece of bone has been found, which is perhaps located in the vessel originally. AEC has come and took some soil samples around this vessel.
The skull has been found in the western part of the chamber but due to the limited time, I did not clean and excavate it.