On the night of 22 June Reijersen sent ashore a scouting party of three men and a Chinese guide to see if the 10,000 Chinese residents of the city would remain neutral. They soon returned after finding the Chinese had fled the city ahead of the invasion. The following morning, Reijersen himself boarded a
launch with some senior officers to scout for a suitable landing site. It was decided that the invading army would make their landing on the eastern Cacilhas Beach () the next day, 24 June.), the ships withdrew for the night without inflicting any casualties on the Portuguese side. Nonetheless, the Dutch celebrated their expected victory in advance by blowing their trumpets and beating their drums all night. The Portuguese responded with similar martial festivities in the city's bulwarks. entrenched at the beach under the command of António Rodrigues Cavalhino gave some initial resistance by shooting into the smoke, killing 40 and wounding Admiral Reijersen in the belly, taking him out of action. Captain Hans Ruffijn took command of the landing force and speedily overran the entrenchment, forcing Cavalhino to pull back, after which the rest of the landing force disembarked without opposition. The
beachhead now secure, Ruffijn left two
companies at the beach as rear-guard and advanced into the city with 600 men, fighting skirmishes with Cavalhino's retreating men along the way. The Dutch marched toward the centre of the city in orderly fashion until reaching the artillery range of the Fortaleza do Monte, where they came under heavy bombardment by a varied mosaic of militiamen, including retired Portuguese soldiers from the State of India who had married and settled in Macau, Eurasian traders and their domestic servants, local and maritime Chinese, Spanish merchants and their Tagalog helpers, and hundreds of African slaves from
Portuguese Mozambique. When the invaders passed by a small spring called Fontinha, the Dutch ammunition cache exploded in their midst, causing many casualties. Portuguese records attribute the cause of the explosion to the
Jesuit priest
Giacomo Rho, who is said to have fired a cannon-shot from the Fortaleza do Monte at the Dutch. The Dutch commanders halted the advance to deliberate their next steps. They decided to climb
Guia Hill, upon which a
hermitage was situated, to get a better view of the enemy, but their ascent was resisted by a party of 30 Macanese and blacks, whose ferocity and effective use of terrain forced the Dutch to turn back. The invaders moved toward a patch of high ground near the Guia Hill, with the intention of retreating for the day due to fatigue and low ammunition (most was lost in the explosion). By then it had become apparent to the Portuguese that the main Dutch force was attacking from the east and that the bombardment of São Francisco was just a
feint. The commander of the São Thiago garrison therefore sent 50 men under Captain João Soares Vivas to aid the inland defense. When the Portuguese realized the Dutch intentions, the defenders occupied the high ground ahead of the Dutch. With the
battle cry "
Santiago!", Lopo Sarmento de Carvalho signaled the counterattack, and the combined forces of the Portuguese defenders, Macanese citizens,
Dominican friars, Jesuit priests, and black slaves charged the enemy, forcing the Dutchmen to retreat. One black woman was even compared to the legendary
Brites de Almeida by a contemporary Jesuit for her incredible skill with a halberd during the battle. The next day, Admiral Reijersen sent ashore a flag of truce to negotiate the release of prisoners. The negotiation was in vain, and the dejected Dutch fleet soon left Macau waters to head for the Pescadores. == Aftermath ==