400 yuan is the arbitration fee. The reason why this Tsinghua University student was forced to post 400 yuan when suing ofo for refunding the deposit was because he applied to the court for arbitration, and this process required 400 yuan's application fee, and the 400 yuan he paid would not be refunded.
However, after careful understanding of the case, the court found that it was not within its jurisdiction in the end, but should be arbitrated by China International Economic and Trade Commission. However, the lowest arbitration fee of the Commission is 6 100 yuan, which is far from the deposit in 99 yuan, so Sun Xiao finally failed to get back the deposit and posted it in 400 yuan instead.
Just to get justice, many people in China can't refund the deposit like Sun Xiao, but the only thing they can do is to wait indefinitely. I don't know when this deposit will arrive, but it may never arrive. Because the company ofo is heavily in debt, and the founder of this company, Dai Wei, is also restricted from spending, there is basically no hope of returning the deposit.
Of course, most people don't really care about 99 yuan's deposit. More people still want justice, for themselves and for others. So that's why Sun Xiao is willing to pay four times the deposit to apply for arbitration. Although he didn't get the deposit back as he wished, it was not an attempt.
Pay attention to the user agreement. For this bankrupt company, we also know his face, and we know that from the beginning, he restricted us from getting back the deposit and protecting our rights and interests by legal means.
This also reminds us that when using all kinds of software, we must pay attention to the user agreement to avoid being routine. Many people directly check the user agreement after downloading the software, without looking at anything. Once there is a overlord clause in it, we will eventually lose out in litigation.