阅读古诗，回答相关问题。

                                                                                                                                          新晴
                                                                                                                                          刘攽
                                                                                                              青苔满地初晴后，绿树无人昼梦余。
                                                                                                              唯有南风旧相识，偷开门户又翻书。

把气球口对准左边，放开手，则它将向____边飞去。