When it comes to the question of whether WeChat and Alipay can be used normally during the war, the answer is not what you think. In fact, once a war breaks out, both communications and financial systems may be severely affected. During war, infrastructure can be damaged, including network services, meaning online payment platforms like WeChat and Alipay may be temporarily or permanently unavailable. At the same time, banking services may also be disrupted, and even if you have money on hand, you will not be able to purchase necessities through traditional cash transactions or electronic payments.

Therefore, we can say that in an extreme environment like war, the digital services relied on in daily life, including WeChat and Alipay, may face major challenges. In this case, cash may become the only means of transaction, and the circulation and security of cash will be greatly affected. So, your assumption does not hold true in reality, as basic survival needs during times of war take precedence over the use of electronic means of payment.