Tencent-backed Chinese online education startup Huohua Siwei, which offers K-12 math and science courses, closes its $400M Series E at a $1.5B valuation (Emma Lee/TechNode)

Amazon’s Ring announces $60 Video Doorbell Wired, its cheapest and smallest doorbell, arriving on February 24  —  Available on February 24th, with preorders starting today  —  Amazon’s Ring has debuted its latest video doorbell, the (blandly named) Ring Video Doorbell Wired which, at $59.99 …

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