How often do one-way friends automatically delete?

At present, one-way friends cannot be deleted automatically. Recently, with # Tencent's open one-way friend detection related patent # quickly boarded the hot search, the function of WeChat two-way deletion of friends may be about to go online. According to Tianyancha APP, on April 23rd, Tencent Technology (Shenzhen) Co., Ltd. disclosed a patent for one-way friend detection method, device, media and computer equipment for social accounts.