Medvedev always reserves an hour each morning and again each evening to swim and weight train. He swims twice a day. He also jogs, plays chess, and practices yoga. Among his hobbies are reading the works of Mikhail Bulgakov and he is also a fan of the "Harry Potter" series after asking J. K. Rowling for her autograph when they met during the G-20 London Summit in April 2009. He is also a fan of football and follows his hometown professional football team, FC Zenit Saint Petersburg. Medvedev is an avid amateur photographer. In January 2010, one of his photographs was sold at a charity auction for 51 million rubles (US$1,750,000), making it one of the most expensive ever sold. The photo was purchased by Mikhail Zingarevich, a co-founder and member of the board of directors of the Ilim Group at which Medvedev worked as a lawyer in the 90s. Medvedev's reported 2007 annual income was $80,000, and he reported approximately the same amount as bank savings. Medvedev's wife reported no savings or income. They live in an upscale apartment house ""Zolotye Klyuchi"" in Moscow. Despite this supposedly modest income, a video by anti-corruption activist Alexei Navalny purports to show "the vast trove of mansions, villas and vineyards accumulated" by Medvedev. On the Russian-language Internet, Medvedev is sometimes associated with the "Medved" meme, linked to "padonki" slang, which resulted in many ironic and satirical writings and cartoons that blend Medvedev with a bear. (The word "medved" means "bear" in Russian and the surname "Medvedev" is a patronymic which means "of the bears".) Medvedev is familiar with this phenomenon and takes no offence, stating that the web meme has the right to exist. Medvedev speaks English, in addition to his native Russian, but during interviews he speaks only Russian. Medvedev initiated a few anti-corruption laws in Russia, and has been a vocal corruption opponent in Russia who often pointed to corruption as one of the main challenges of Russia. In September 2016, Alexei Navalny published a report with information about Dmitry Medvedev's alleged summer residence ("dacha") – an 80 hectare estate with plethora of houses, a ski run, a cascading swimming pool, three helipads and purpose-built communications towers.