Is it illegal to install guardrails on terraces?

Legal analysis: it is not illegal to install guardrails on your balcony. As long as the guardrail does not protrude too much, it is the same as the guardrail installed by the residents in this building. It's not an illegal building

Legal basis: Article 7 of the Regulations on Property Management: Owners shall perform the following obligations in property management activities: (1) Abide by the management statute and the rules of procedure of the owners' meeting; (two) abide by the rules and regulations of the use of * * * parts and facilities, the maintenance of public order and environmental sanitation in the property management area; (three) to implement the decisions of the owners' congress and the decisions of the owners' committee authorized by the owners' congress; (four) in accordance with the relevant provisions of the state to pay special maintenance funds; (five) to pay the property service fee on time; (six) other obligations stipulated by laws and regulations.