We are in Maseches Taanis, chapter 1, mishnah 6. In the two previous mishnayos we learned the order of the first fasts: if rain has not fallen in Eretz Yisrael by the seventeenth of Marcheshvan, the Torah scholars begin to fast three light fasts - fasts that begin only in the morning and whose prohibition is limited to eating and drinking. And if Rosh Chodesh Kislev arrives and still no rain has fallen, the entire community fasts three additional light fasts, during the daytime only. Our mishnah discusses what happens when these fasts have passed and the community still has not been answered.
The third set of three fasts - a stringent fast:
"Avru eilu velo na'anu - beis din gozrin shalosh taaniyos acheros al hatzibur" - when the three previous fasts have passed and they were not answered with rain, beis din declares and decrees three additional fasts upon the community. These fasts are more stringent than the earlier ones: "ochlin veshosin miba'od yom" - eating and drinking are permitted only on the day before the fast, and from the preceding night the fast begins. In addition, five afflictions are prohibited on them:
"Va'asurin bimlachah" - one may not go out and do work, similar to the practice on Tishah B'Av, when the work is not essential.
"Uvirchitzah" - washing is prohibited.
"Uvsichah" - anointing the body is prohibited.
"Uvin'ilas hasandal" - wearing leather shoes is prohibited.
"Uvtashmish hamitah" - marital relations are prohibited.
"Vono'alin es hamerchatza'os" - since washing is prohibited, they would close the bathhouses.
The final seven fasts:
"Avru eilu velo na'anu - beis din gozrin aleihem od sheva" - if these three fasts too have passed and they still were not answered, beis din decrees seven additional fasts, "shehen shalosh esreh taaniyos al hatzibur" - these seven, together with the six earlier fasts of the community, add up to thirteen fasts. The fasts of the Torah scholars are not included in this count, since the count deals with the fasts imposed upon the entire community.
The added stringencies of the final seven:
"Harei eilu yeseiros al harishonos" - the final seven fasts are more stringent than the earlier ones, and not only in that the fast lasts twenty four hours as in the three fasts that preceded them, but in two additional matters:
"Sheva'eilu masri'in" - they sound blasts. The commentators discuss which instrument they would sound: a shofar, trumpets, or metal horns.
"Vono'alin es hachanuyos" - they close the food shops. However, "besheni matin im chasheicha" - on Mondays they would open the doors slightly toward evening, so that people could buy what they needed to break the fast. "Uvachamishi mutarin mipnei kevod haShabbos" - on Thursdays it was permitted to leave the shops open all day, out of respect for Shabbos, so that people could buy what they needed for the Shabbos coming the next day.
In summary: in this mishnah we learned the order of increasing severity in the fasts for rain. After the six light fasts learned in the previous mishnayos, beis din decrees three stringent fasts, in which the fast begins while it is still day and five afflictions are observed, along with the closing of the bathhouses. If they were not answered, seven more fasts are decreed, completing thirteen fasts upon the community, and in them two stringencies are added: sounding the alarm blasts and closing the shops, apart from special leniencies on Mondays and Thursdays out of respect for Shabbos.