nce*                                                                                                                                                                                                                                     Average \# of new cases, 0 week lag               0.000[\*\*\*](#TFN0){ref-type="table-fn"}    0.000[\*\*\*](#TFN0){ref-type="table-fn"}    0.000[\*\*\*](#TFN0){ref-type="table-fn"}   0.000[\*\*\*](#TFN0){ref-type="table-fn"}   0.0000                                       0.000                                                     (0.0000)                                     (0.000)                                      (0.0000)                                    (0.000)                                     (0.000)                                      (0.000)   Average \# of new cases, 0 week lag               −0.000[\*\*\*](#TFN0){ref-type="table-fn"}   −0.000[\*\*\*](#TFN0){ref-type="table-fn"}   0.000                                       −0.000                                      −0.000[\*\*\*](#TFN0){ref-type="table-fn"}   −0.000[\*\*\*](#TFN0){ref-type="table-fn"}                                                     (0.0000)                                     (0.000)                                      (0.000)                                     (0.000)                                     (0.0000)                                     (0.000)   Observations                                      0,000                                        0,000                                        0,000                                       0,000                                       0,000                                        0,000   Number of cities                                  000                                          000                                          000                                         000                                         000                                          000   Weather controls                                  YES                                          YES                                          YES                                         YES                                         YES                                          YES   City FE                                           YES                                          YES                                          YES                                         YES                                         YES                                          YES   Date FE                                           YES                                          YES                                          YES                                         YES                                         YES                                          YES  The dependent variable is the number of daily new confirmed cases. Lagged average temperature, maximum wind speed and precipitation are used as instrumental variables in the IV regressions. Standard errors in parentheses are clustered by provinces.  p\<0.00  p\<0.00,  p\<0.0.  ######   Within and Between City Transmission of COVID-00                                          Jan 00 - Feb 00                               Jan 00 - Feb 0                                Feb 0 - Feb 00                                                                                                                                ------------------------------------- --------------------------------------------- --------------------------------------------- --------------------------------------------- --------------------------------------------- ---------------------------------------------- ----------------------------------------------   Average \# of new cases, 0 week lag                                                                                                                                                                                                                                             Own city                              0.000[\*\*\*](#TFN0){ref-type="table-fn"}     0.000[\*\*\*](#TFN0){ref-type="table-fn"}     0.000[\*\*\*](#TFN0){ref-type="table-fn"}     0.000[\*\*\*](#TFN0){ref-type="table-fn"}     −0.000[\*\*\*](#TFN0){ref-type="table-fn"}     −0.0000[\*\*\*](#TFN0){ref-type="table-fn"}                                         (0.0000)                                      (0.0000)                                      (0.000)                                       (0.000)                                       (0.0000)                                       (0.0000)   Other cities                          −0.0000[\*\*\*](#TFN0){ref-type="table-fn"}   −0.0000[\*\*](#TFN0){ref-type="table-fn"}     0.0000                                        0.0000                                        −0.0000[\*\*](#TFN0){ref-type="table-fn"}      −0.000[\*\*\*](#TFN0){ref-type="table-fn"}   *weight = inverse distance*           (0.00000)                                     (0.0000)                                      (0.0000)                                      (0.0000)                                      (0.0000)                                       (0.0000)   Wuhan                                 −0.0000