Excuse me, do I have to be signed by my immediate family to sign an entrustment contract with a lawyer? Is it valid if it is an uncle or nephew?

I specialize in criminal defense. According to the provisions of the criminal law and my experience in handling cases, what you said is definitely possible. Both uncles and nephews can sign agency contracts. In addition, if your case is in Beijing, according to the statutory standards and Beijing regulations, 200,000 is really enough for the starting point of 10 year. As for the specific results, it mainly depends on the lawyer's defense. The time of the second trial is generally 2-2 years after the judgment of the first instance.