Underground investment firms are a similar situation. Although they may have registered with the government according to law, many investment firms are engaged in illegal practices, which is the case with what are called underground investment firms.
地下投資公司也是這個情形，現在有很多公司，雖然曾經依法向政府登記，但是營業的方法卻常常不是合法的，這就是所謂地下投資公司產生的情況。