Seuserenre Khyan (also Khayan or Khian and Apachnan from the West Semitic Apaq-khyran) was an Hyksos king of the Fifteenth Dynasty of Egypt, ruling over Lower Egypt in the second half of the 17th century BCE. His royal name Seuserenre translates as "The one whom Re has caused to be strong." Khyan bears the titles of an Egyptian king, but also the title ruler of the foreign land (heqa-khaset). The later title is the typical designation of the Hyksos rulers. Khyan is one of the better attested kings from the Hyksos period, known from many seals and seal impressions. Remarkable are objects with his name found at Knossos and Hattusha indicating diplomatic contacts with Crete and the Hittites. A sphinx with his name was bought on the art market at Baghdad and might demonstrate diplomatic contacts to Babylon, in an example of Egypt-Mesopotamia relations. Hyksos Kingdom Khyan's seat of power was located in Avaris, which hosted a strongly fortified palace. Seal impressions of Khyan and a stela of his eldest son, prince Yanassi, were found in two areas of the city during excavations, confirming his presence onsite. The palace, possibly destroyed during the later conquest of the Hyksos' kingdom by the Thebans under Ahmose I, comprised a high platform built on massive brick casemates surrounded by columned halls and monumental staircases leading to a still higher platform, on which the royal apartments probably stood. This palace seems to have been abandoned c. 1600 BC, at which point an enormous ritual feast was orchestrated, filling several wide pits with animal bones and thousands of pottery fragments in consequence. Some of these fragments came from an array of vessels produced by the Kerma culture, a Nubian kingdom and Hyksos' ally during the Second Intermediate Period. The Egyptologist Manfred Bietak proposes that the ritual feast and abandonment of the palace were triggered by the death of its owner, most probably Khyan. On the western edge of Avaris, another fortress was subsequently erected in the later Hyksos period c. 1560-1530 BC, likely under Khyan's successor Apepi. East of Avaris, the Hyksos controlled the massive fortress of Tjaru on the road to Sinai and Canaan, where stelae of the Hyksos king Apepi were uncovered. According to Manfred Bietak, Khyan's rule marks the peak of the Hyksos kingdom power. In this view, Khyan directly ruled over Lower and Middle Egypt up to Cusae and indirectly dominated