By good luck, the weather turned out fine yesterday morn..

We & tree volunteer students did water quality check.

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There are always new discoveries in WQC.

Yesterday, even though under the high temperature,

water temperature of wells are lower than I’d guessed.

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One well was fastened a lock!

The reason is to protect the well from something will

be thrown into.

Some times, I was struck by the beasty of the result

of the chemical reaction.

The next WQC will be held in the 8th, Nov..

I’ll gladly wait your participation in it.