Lu Tianzhi wanted to boil water for laundry, so he needed a coal stove.
The firewood at home was insufficient; it had to be used for cooking, and he didn't want to waste it on heating water.
Qingxue made formula for the triplets and let them sit quietly to drink, then came out and walked into the kitchen, "This isn't a big deal, just take some honeycomb briquettes over to your Aunt Shuixian for an exchange."
Her family had children, and their coal stove was never extinguished.
Sometimes Qingxue would forget to change the briquettes and put out the fire, often turning to Hu Shuixian for help to reignite it.
Lu Tianzhi responded, picked up the tongs, and grabbed an unused honeycomb briquette to exchange with Hu Shuixian for one that was half-burnt, the top half black and the bottom half glowing red; he hurriedly placed it into the coal stove upon returning.
Three briquettes were placed, one at the bottom was completely burnt out, and on top of it was an unburnt one.
