Is it safe to use my Xiaomi 67W wall charge for IPad Pro

Recent models of iPad are supplied with an Apple 20W USB-C Power Adapter.

Does the Xiaomi USB-C Power Adapter support USB-PD (Power Delivery)? If not, it may be unsuitable for Apple devices.

Some third-party USB-C power adapters (and portable PowerBanks) do not support USB PD (Power Delivery). Power Delivery mutually negotiates the charging voltage; the source, load and cable are all elements involved in the negotiation protocol.

Unless the Power Adapter explicitly supports USB PD, it will almost certainly fail to charge the iPad; proprietary charging standards, such as QC (Quick Charge), are not supported.

See this for further reference

To charge your iPad, connect the included USB-C cable to the device's USB-C port and to the included power adapter. Then plug the adapter into a wall outlet.

If you have a higher-wattage USB-C power adapter—such as the one that came with your Mac laptop—you can use it with your iPad for faster charging. You can also charge your iPad by connecting it to the USB-C port on your computer.

I sometimes charge my iPad if i need a fast charge with my MacBook charger that one is 96w

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