Question: Cantonese embroidery, or Yue embroidery, is a style of embroidery folk art of which region, the low-lying area surrounding the Pearl River estuary, where the Pearl River flows into the South China Sea?
Context: The Pearl River Delta Economic Zone () (once called 粤江平原), is in the Pearl River Delta region, the expansive delta lands of the Pearl River at the South China Sea.  It consists of Guangzhou, Shenzhen, Dongguan, Foshan, Zhongshan, Zhuhai, Jiangmen, and parts of Huizhou and Zhaoqing, has been the most economically dynamic region of the Chinese Mainland since the launch of China's reform programme in 1979.  Adjacent Hong Kong and Macau are not part of the economic zone. Lingdingyang () or Lingding Channel, the middle channel of the Pearl River estuary, it runs from Humen to Jiuzhouyang.  The Humen separates Lingdingyang and Shiziyang the upper channel of the Pearl River Estuary in the north and the Jiuzhouyang the lower channel of the Pearl River Estuary at the southern tip of Xiangzhou and the western tip of Lantau all the way till the southern end of the Wanshan Archipelago.  Currently, Humen Pearl River Bridge is the only bridge that crosses Lingdingyang at the northern end with Hong Kong–Zhuhai–Macau Bridge a bridge and tunnel across Lingdingyang is being built in the southern end of channel. Cantonese embroidery (Cantonese Jyutping: Jyut6 sau3; Traditional Chinese: 粵繡), or Yue embroidery, is a style of embroidery folk art of the Pearl River Delta region.  It is one of the well-known "Four Great" embroideries of China. Hunan embroidery, or Xiang embroidery, as one of the traditional folk arts of China, together with Suzhou embroidery, Sichuan embroidery, and Cantonese embroidery, is regarded as the four most distinguished embroidery styles in China.  It is a general name for the embroidery products which rise from and are mostly produced at Changsha, Hunan, with distinct characteristics of Chu culture.  Hunan embroidery is particularly famous in embroidering with silk thread, and the patterns have a high sense of reality.  In 2006, Hunan embroidery was selected into the first batch of national intangible cultural heritage list. Dongguan is a prefecture-level city in central Guangdong Province of South China.  Often considered the cultural capital of the Pearl River Delta, Dongguan borders the provincial capital of Guangzhou to the north, Huizhou to the northeast, Shenzhen to the south, and the Pearl River to the west.  It is part of the Pearl River Delta megacity with more than 44.78 million inhabitants at the 2010 census spread over nine municipalities (including Macao) across an area of 17,573 km2 .  Dongguan's city administration is considered especially progressive in seeking foreign direct investment.  Dongguan ranks behind only Shenzhen, Shanghai and Suzhou in exports among Chinese cities, with $65.54 billion in shipments.  It is also home to one of the world's largest, though largely empty, shopping malls, the New South China Mall.  The majority of the population speak Mandarin due to migrants from other parts of the country. The Pearl River Mouth basin (PRMB) is an extensional sedimentary basin located in the northern part of the South China Sea.  The basin covers an area of about 175,000 km where the Pearl River meets the South China Sea near Hong Kong. The Xi River () is the western tributary of the Pearl River in China.  It is formed by the confluence of the Gui and Xun Rivers in Wuzhou, Guangxi.  It then flows east through Guangdong, and enters the Pearl River Delta just east of the Lingyang Gorge in Zhaoqing.  The main branch of the Xi River flows southeast through the delta entering the South China Sea at Modao Men, just west of Macau.  The major cities along the Xi include Wuzhou, Zhaoqing, and Jiangmen. The Pearl River Delta Metropolitan Region (PRD), also known as Zhujiang Delta or Zhusanjiao, is the low-lying area surrounding the Pearl River estuary, where the Pearl River flows into the South China Sea.  It is one of the most densely urbanized regions in the world and is an economic hub of China.  This region was also the source of much Chinese emigration from the 19th to the mid 20th centuries, including to the Western world, such as the US, Canada, Australia, Latin America, and much of Southeast Asia, where they formed many Chinatowns.  Today, much of the Chinese diaspora traces their ancestry to this region. The Humen, known historically by Europeans as the Bocca Tigris or Bogue, is a narrow strait in the Pearl River Delta that separates Shiziyang in the north and Lingdingyang in the south near Humen Town in China's Guangdong Province.  It is the site of the Pearl River's discharge into the South China Sea.  It contains the Port of Humen at Humen Town.  The strait is formed by the islands of Chuenpi (穿鼻 ,  "Chuanbi") and Anunghoy (阿娘鞋 ,  "Aniangxie"; also called 威远 ,  "Weiyuan") on the eastern side, and Taikoktow (大角头,  "Dajiaotou") on the western side.  Since 1997, the strait has been traversed by the Humen Pearl River Bridge. Shiziyang () or Shizi Channel, the upper channel of the Pearl River estuary, it runs from the confluence of the Dong River and the Pearl River with parts of the Bei River to the Bocca Tigris which separate Lingdingyang the mid channel of the Pearl River Estuary in the south.  It is a wide tidal strait connecting the Huangpu New Port of Guangzhou to the South China Sea. The Huangpu New Port is located at the confluence of the Dong River and the Pearl River.  The Huangpu New Port is only part of the larger Port of Guangzhou.  Currently there is one rail tunnel (Shiziyang Tunnel) and one bridge (Humen Pearl River Bridge) crossing the Shiziyang.
Answer: Pearl River Delta