The death toll from Hong Kong’s deadliest fire in seven decades climbed to more than 100 on Friday as the government announced a three-day official mourning period from Saturday for victims of the blaze. National and Hong Kong flags at all its buildings and facilities will fly at half-mast until Monday, with officials cancelling all non-essential public engagements and government-endorsed celebratory events delayed or cancelled. Residents can also pen their condolences in books placed across the...