HONG KONG, CHINA -- According to the Hong Kong Observatory, the city's weather forecast agency, about 230 millilitres of rain had fallen between the first of the year and Apr. 25. Of that amount, fully 200 mls have been recorded since the first of this month and the vast majority of that has occurred this week, as rain--at times heavy enough to completely obscure the top of the Sha Tin straight course--thunder and lightning have been just this side of relentless. The considerable precipitation has the connections of Hong Kong's...