Two liquid-fill gauges display two paired datasets, each with two values (0.6/0.3 and 0.8/0.2), rendered as overlapping blue bubbles inside rounded containers. The example shows how ECharts’ `liquidFill` series type can be instantiated twice on separate DOM elements (`main` and `sub`), with each chart initialized via `echarts.init` and configured through a `setOption` call. A separate container positions the two gauges at different screen offsets.