The real and personal property belonging to the City shall not be liable for sale or appropriation under any writ or execution or cost bill, and no lien of any kind shall ever exist against any such property owned by the City except a lien created or authorized by this Charter or state law. The funds belonging to the City in the hands of any person, firm, or corporation shall not be liable to garnishment, attachment, or sequestration. The City shall not be liable to garnishment on account of any debt it may owe or funds or property it may have, on hand or owing to any person. Neither the City nor any of its officers or agents shall be required to answer any such writ or garnishment on any account whatever. The City shall not be obligated to recognize any assignment of wages or funds by its employees, agents, or contractors except by court order.