Eleven-year-old Yongcheng and his sister, Minxia, 17, told yesterday how they were dodging arrest by immigration officials as they fought to stay in Hong Kong. On a day when six more overstayers were arrested, Yongcheng and his sister continued to take part in a sit-in outside the Central Government Offices. 'I'm a little bit afraid of being arrested. We have the right to stay in Hong Kong. It's not right for the Government to ask us to leave,' Yongcheng said. The children have been applying for a one-way permit for six years. Their two-way permits expired on Friday and they were ordered to return to the mainland. Father Franco Mella, a human rights activist helping the protesters, said at least 10 per cent of the 300 mainlanders who had joined the demonstration over the past five days had two-way permits which had expired. Immigration officers arrested two male and four female two-way permit overstayers yesterday, bringing the number caught this week to 11. A further 72 overstayers have volunteered to return. Most of the arrests were made at the overstayers' homes. At least two were said to have been caught when they went to a public toilet near the Central Government Offices. Many of the protesters said they would avoid leaving the demonstration crowd alone. 'If we want to go to the toilet, 10 of us will go together,' one demonstrator, 25, whose permit expires today, said. An Immigration Department spokesman said all overstayers would be repatriated. He said it would not examine any claims for right of abode from any two-way permit holders if they had not been granted a Certificate of Entitlement. Director of Immigration Ambrose Lee Siu-kwong said his discussion with Beijing officials today on details of the Certificate of Entitlement system would not be affected by the court row.