In January 2015, following CY Leung's attack on a compilation book entitled "Hong Kong Nationalism", Joint Publishing, Chongwa, and Commercial Press de-listed the title. Hong Kong media reported that Sino had published and was distributing at least five anti-Occupy titles, and its stores were displaying these prominently, whereas popular books on the Umbrella movement by pro-democracy authors had been banished from their shelves. In March 2015, Up Publications, a small independent publishing house, complained that it was suddenly and unexpectedly faced with a large number of returns from the three main subsidiaries of Sino. Twenty titles were affected by the returns, to the serious detriment to the finances of Up Publications; many of the titles returned were not politically themed. The publisher was allegedly told by a bookshop source that its stance in the 2014 occupation and its publishing of books supportive of the Umbrella Movement were responsible. Although no reason was given for the returns, two of the delisted books about the occupation were strong sellers at independent bookshops. Students staged a "read-in" of delisted books outside the Commercial Press on the campus of the Chinese University to draw attention to the marginalisation of independent books, and urging the public to independent booksellers in the city instead of subsidiaries of Sino.