What to do if the Xiaomi Smart Desktop Air Circulation Fan button fails?

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.lf-color-picker { display: flex; flex-direction: row; justify-content: space-between; height: 90px }
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.lf-popover-snapshot a:before { content: "⥼"; margin-right: 5px }
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div { margin-right: 5px; margin-left: 5px }
div:first-child { margin-left: 0 }
div:last-child { margin-right: 0 }If the Xiaomi Smart Desktop Air Circulation Fan button fails, please refer to the following steps:1. First, check whether the device is powered on normally;2. Check whether the Child lock function is turned on;3. Reconnect the power after the power is turned off;4. If the problem still exists, please apply for after-sales inspection.