Complex sentence: Marignolli stayed at Peking or Cambalec three or four years, after which he travelled through eastern China to Zayton or Amoy Harbor, quitting China apparently in December 1347, and reaching Columbum (Kaulam or Quilon in Malabar) in Easter week of 1348.
Split into simpler sentences: Marignolli stayed at Peking or Cambalec three or four years, after which he travelled through eastern China to Zayton or Amoy Harbor, quitting China apparently in December 1347. He reached Columbum (Kaulam or Quilon in Malabar) in Easter week of 1348.