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Following Huan's death, Dou Wu and the Grand Tutor Chen Fan (陳蕃) (d. 168 AD) attempted a coup d'état against the eunuchs Hou Lan (d. 172 AD), Cao Jie (d. 181 AD), and Wang Fu (王甫). When the plot was uncovered, the eunuchs arrested Empress Dowager Dou (d. 172 AD) and Chen Fan. General Zhang Huan (張奐) favored the eunuchs. He and his troops confronted Dou Wu and his retainers at the palace gate where each side shouted accusations of treason against the other. When the retainers gradually deserted Dou Wu, he was forced to commit suicide.

Who arrested Chen Fan in a failed plot?
Answer: the eunuchs
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In Cambodia, there are Institutes of Technology/Polytechnic Institutes, and Universities that offer instruction in a variety of programs that can lead to: certificates, diplomas, and degrees. Institutes of Technology/Polytechnic Institutes and Universities tend to be independent institutions.

What country has Institutes of Technology/Polytechnic Institutes from which students can earn certificates, diplomas, and degrees?
Answer: Cambodia
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While videoconferencing technology was initially used primarily within internal corporate communication networks, one of the first community service usages of the technology started in 1992 through a unique partnership with PictureTel and IBM Corporations which at the time were promoting a jointly developed desktop based videoconferencing product known as the PCS/1. Over the next 15 years, Project DIANE (Diversified Information and Assistance Network) grew to utilize a variety of videoconferencing platforms to create a multi-state cooperative public service and distance education network consisting of several hundred schools, neighborhood centers, libraries, science museums, zoos and parks, public assistance centers, and other community oriented organizations.

What is the videoconferencing product that both IBM and PictureTel worked on?
Answer:
PCS/1