Two Chinese technology groups Alibaba Group Holding and Tencent Holdings had begun allowing each side’s application ecosystem to exchange, ending the time when each technology company had a monopoly in its world.

Chinese media reports that Alibaba services such as food delivery platform and video streaming site Youku Tudou now accept payments through Tencent’s WeChat app. Other Alibaba apps, including supermarket chain Freshippo, have also signed up to support WeChat Pay.

The shift comes as Beijing is pressuring big tech companies to change the proprietary practices that have fueled their growth for so long.

Previously, most Alibaba services did not accept WeChat Pay, while Tencent also blocked Alibaba apps. Although Alibaba’s Taobao remains closed to WeChat, a person familiar with the matter told Nikkei that this would soon change.

Last month, Tencent began allowing users of its rivals’ apps on WeChat, and on Sept. 30, both Tencent and Alibaba said that they would use the state-owned UnionPay as a payment option.

Nikkei reported that Chinese officials recently warned tech giants not to close their doors to outside services.

Blocking the use of another company’s apps without good reason “affects user experience, harms user rights, and disrupts market order,” said Zhao Zhiguo, a spokesman for Industry and Information Technology (MIIT), told reporters in mid-September.

Mr. Zhao added that in the absence of noticeable improvement, MIIT would take measures permitted by law.

Currently, Tencent and ByteDance, the developer of the popular short-video app TikTok, have yet to make any concessions. The two sides are bitter rivals in the streaming and social media markets. It seems Tencent hasn’t lifted WeChat’s policy of blocking links to Douyin, China’s version of TikTok.

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