修道院四周是防护围墙，均是16和17世纪修建的，其坚固性经受了好几次的考验。

The monastery is skirted by the defensive walls, which were erected in the 16th and 17th centuries and proved their might several times.

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时间系数的小波分析表明其具有2 ~ 4年的周期，这一周期成分在1950年代前期和1990年代末至21世纪初这两个时段比较显著。

Wavelet analysis of time coefficients indicates that it has the cycle of 2-4 years and the cycle component is more significant in the early 1950s and from the late 1990s to the early 21st century.

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