Short answers, pulled from the story.
The Nikkei, published by Nikkei, Inc. in Tokyo, is the world's largest financial newspaper with over 3 million subscribers. It is Japan's only business daily and one of four national newspapers in the country. Since 1950, it has also calculated the Nikkei 225, the benchmark stock market index for the Tokyo Stock Exchange.
The Nikkei traces its origins to 1876, when an in-house newspaper department at Mitsui and Company began publishing a weekly market-quotation bulletin called Chugai Bukka Shimpo. The department was spun off as the Shokyosha in 1882, became a daily in 1885, and took its current identity as the Nihon Keizai Shimbun in 1946.
Critics quoted by The Japan Times say the Nikkei relies too heavily on leaks from corporate insiders and is reluctant to criticize Japanese firms. New York Times reporter Hiroko Tabuchi described the paper as a PR machine for Japanese business, noting it initially ignored the 2011 Olympus accounting scandal and produced almost no investigative reporting on the Takata airbag defect.
On the 10th of August, 2020, three Hong Kong Police Force officers visited the Nikkei's Hong Kong branch with a court order. The visit was part of an investigation into an advertisement published in the newspaper approximately a year earlier that had called for international support for Hong Kong's pro-democracy protests.
The Nikkei signed an agreement with Singapore Press Holdings on the 25th of April, 1990 to print a same-day edition for Southeast Asia. The first Singapore edition was set to be published from the 1st of October of that year.
The Nikkei is one of four national newspapers in Japan. The other three are the Asahi Shimbun, the Yomiuri Shimbun, and the Mainichi Shimbun. Unlike those three, the Nikkei is the country's only business-focused daily.