How to pull banners to collect debts is not illegal.

It is illegal to pull banners to collect debts. Debt collection should be carried out according to law, and no excessive actions should be taken. It is not illegal to pull banners and slogans at the door of companies that owe money if it does not disturb the work order of enterprises and the order of public places. Gathering people to make trouble is called the crime of gathering people to disturb social order. The parties may settle the debt dispute by bringing a lawsuit to the court, applying for arbitration, consulting, etc., but they cannot collect debts in a way that interferes with the daily production, operation and life of the debtor.

According to the relevant provisions of the law, whoever incites the masses to violently resist the implementation of national laws and administrative regulations shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance or deprivation of political rights; If serious consequences are caused, they shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years. Other active participants shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance or deprivation of political rights. Whoever obstructs deputies to the National People's Congress and local people's congresses at various levels from performing their duties according to law by violence or threats shall be punished in accordance with relevant laws and regulations.

Legal basis: Article 278 of the Criminal Law of People's Republic of China (PRC).

The crime of inciting violence to resist execution incites the masses to violently resist the execution of state laws and administrative regulations, and shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention, public surveillance or deprivation of political rights; If serious consequences are caused, they shall be sentenced to fixed-term imprisonment of not less than three years but not more than seven years.