Question: What typhoon struck China in 2012 approached within 800 km of Hong Kong and posed a threat of deteriorating conditions in Hong Kong?

<P0-S0> Youth in Hong Kong, according to the University of Hong Kong Statistical Profile, includes citizens of the Chinese territory of Hong Kong aged 15–24 years. <P0-S1>  As of 2011, youth in Hong Kong ages 15–24 made up 12.4% of Hong Kong's overall population at 875,200 people. <P0-S2>  Hong Kong is a hybrid culture, influenced by China and Britain, but overall by its international economic ties, which plays a role in shaping the lives of the youth in Hong Kong. <P0-S3>  The youth in Hong Kong are unique in the fact that many are living Transnationalist identities. <P0-S4>  The demographics are not just ethnically Chinese youth in Hong Kong, but also youth that are ethnically White, Indonesian, Filipino, which can be seen in Demographics of Hong Kong, and that creates a unique society. <P0-S5>  "Although with a dominant Chinese population, Hong Kong is an international city and is a mix of East and West rich in cultures, history, and religions." <P0-S6>  The disparity between the rich and poor within Hong Kong has been growing wider. <SEP> <P1-S0> The Hong Kong Special Administrative Region (HKSAR) of the People’s Republic of China is a destination and transit territory for men and women trafficked for the purposes of commercial sexual exploitation and forced labor. <P1-S1>  Hong Kong is primarily a transit point for illegal migrants, some of whom are subject to conditions of debt bondage, sexual exploitation, and forced labor. <P1-S2>  To a lesser extent, Hong Kong is a destination for women from the Chinese mainland and Southeast Asia who travel to Hong Kong voluntarily for legal employment in restaurants, bars, and hotels, but upon arrival are coerced into prostitution under conditions of debt bondage. <P1-S3>  Some of the women in Hong Kong’s commercial sex trade are believed to be trafficking victims. <P1-S4>  Although Hong Kong continues efforts to regulate the thousands of foreign domestic workers from the Philippines and Indonesia currently working in Hong Kong, there appears to be a growing number of Indonesian workers who are subject to exploitation and conditions of involuntary servitude. <P1-S5>  Many Indonesian domestic workers earning the minimum wage are required to repay to their Indonesian recruitment agency $2,700 within their first seven months of employment, amounting to roughly 90 percent of a worker’s monthly salary. <P1-S6>  Such high levels of indebtedness assumed as part of the terms of employment can lead to situations of debt bondage, when unlawfully exploited by recruiters or employers. <P1-S7>  Additionally, the confiscation of passports by some Hong Kong employment agencies restricts the ability of migrant workers to leave their employer in cases of abuse, and places them under further control of their employment agency, leaving them vulnerable to trafficking. <SEP> <P2-S0>  Vicente was also a powerful tropical cyclone that struck Macau and nearly impacted Hong Kong, as well as Guangdong and Guangxi provinces in China. <P2-S1>  Vicente, the eighth named storm and third typhoon in the 2012 Pacific typhoon season, began life as a tropical depression on July 18, 2012 north east of the Philippines. <P2-S2>  Vicente soon steadily moved into the South China Sea, and began to intensify above warm sea waters, and began explosive intensification early on July 23, and started to charge toward the Guangdong region prompting the Hong Kong Observatory (HKO) to issue the Hurricane Signal, No. 10, the first since York in 1999. <P2-S3>  The Macao Meteorological and Geophysical Bureau also hoisted the Signal No. 9 for the first time since York and after the transfer of sovereignty over Macau. <P2-S4> Typhoon Vicente, known in the Philippines as Tropical Depression Ferdie, was regarded as the most powerful storm to strike southern China in recent years, as it made landfall as a powerful category 4 equivalent-typhoon. <P2-S5>  Late on the same day, Vicente made landfall over Taishan in Guangdong, China. <SEP> <P3-S0> The Hong Kong tropical cyclone warning signals (), or informally typhoon signals (, literally, "wind balls"), are a set of signals used to indicate the threat or effects of a tropical cyclone. <P3-S1>  The Hong Kong Observatory issues the warning signal if a tropical cyclone approaches within 800 km of Hong Kong and poses a threat of deteriorating conditions in Hong Kong.