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Any fixes to the Max software, the focus of investigations of two deadly crashes that have prompted worldwide groundings of the aircraft, must still win approval from governments around the world.

Apart from his own lectures, he invited guests to talk to students, including a team with firsthand experience in developing games, an alumna who created her own game, and a psychology teacher who could discuss the social and psychological problems caused by games.

Ant's advantage is based on its massive customer base, a comprehensive payment system, and the consequent fame needed to win the trust of both partner institutions and end users.

Anyone going through the southwestern gate of Peking University can now have their face scanned by a camera instead of showing their ID card to security guards under a trial run of the system that started on Wednesday. The technology will be installed at all university gates soon.

Apart from technology itself, a high-value patent also depends critically on quality patent documentation drafting, he said, citing the ubiquitous selfie stick that has survived more than 20 invalidation attempts because it is protected by a well-drafted patent application.