Six individuals convicted of obstructing justice for escaping the besieged Hong Kong Polytechnic University (PolyU) campus during the 2019 pro-democracy protests are appealing their sentences. The defendants initially fled the campus via a rope descent from a bridge as police surrounded the area. They were previously found guilty and imprisoned for perverting the course of justice due to their actions in evading authorities. The appeal challenges those earlier convictions and seeks to overturn the imposed prison terms. Details surrounding the specifics of their escape and the legal arguments for appeal remain limited in the provided text. This case highlights the ongoing legal fallout from the widespread protests that gripped Hong Kong in 2019 and the debate surrounding the charges levied against participants. The outcome of the appeal could set a precedent for similar cases stemming from the protests.