 But the fleet, under the command of Cornelis Reijersen, had already left Batavia on 10 April 1622 before the order was sent.The ultimate goal of the expedition was to establish a Dutch base of operations on the China coast and force the Chinese to trade with the Dutch, so Reijersen was given the option not to attack Macau; he was to form fortifications on the Pescadores regardless of whether he attacked.On 8 June the fleet sailed into Cam Ranh Bay for firewood and water, where it incorporated four Dutch ships encountered off the coast of Indochina and detached a ship with dispatches for William Janszoon, admiral of the Anglo-Dutch Fleet of Defence blockading Manila.