I was starting to think that u have other problem rather than frozen pipe somewhere. If it's me, I would go around hardware stores NEAR THE HOUSE, talk to personel, they may know something. May be someone from same housing project has asked for help.
For 10 year's old house, I AM GUESSING that all your pipes are properly insulated, i.e. cold and hot water pipes wrapped individually. Anyhow, since it is weekend, why don't u try running your dishwasher, laundry machine and take hot shower all at once

tomorrow. Let your cold kitchen tap drip while u "run your hot water" and see if it improve. As normally cold and hot water pipes are next to each other during installation, it may help to refroze any frozen section, if any.
U can't let any frozen pipe unattended, over extended period of time, it may burst. U don't want to see that, believe me!!!
Anyone else on this web site can help????? 每天下班能放3碗冷水 is strange.