Black rain has struck again, the Hong Kong Observatory issued a black rain warning signal again at 5:50 am today (5th), and it is expected to last at least until 11 am this morning. The Observatory said that heavy rain is occurring in the Central and Western District and the Islands District, with hourly rainfall expected to exceed 100 mm, potentially causing severe flooding. Some roads within the Mary Hospital area have experienced severe flooding, affecting emergency services. Social media has circulated videos from this morning showing flooding inside Mary Hospital. It can be seen that the main entrance of Mary Hospital is like a river, even the water barriers have been washed away and are floating along the current. Another video also shows that there is severe flooding around Mary Hospital, and the uploader described it as the 'Mary Sea'. At around 9 am this morning, a reporter from Hong Kong 01 visited Mary Hospital to inspect the situation, but encountered flooding along the way. There were even 'waterfalls' on the slopes, with a large amount of rainwater rushing down. By around 10 am, the reporter reached Mary Hospital and found that the water depth had already reached the calf level. On-site, fire personnel and hospital staff were installing waterproof gates at the main building. The Drainage Department's emergency response team had also arrived at Mary Hospital to handle the flooding and deployed the 'Dragon Sucker' robot to manage the flooding. The main entrance of Mary Hospital is like a river, with even the water barriers being washed away and floating along the current. (Online image) Staff installing waterproof gates at the main building Firefighters and hospital staff are installing waterproof gates at the main courtyard building. (Photograph by Lo Man Yin) On-site, it can be seen that the water depth at Mary Hospital had reached the calf level. (Photograph by Lo Man Yin) The Drainage Department's emergency response team deployed the 'Dragon Sucker' robot to handle the flooding The Drainage Department's emergency response team has also arrived at Mary Hospital and deployed the 'Dragon Sucker' robot to handle the flooding. (Photograph by Lo Man Yin)