On	O
July	B-DATE
22	I-DATE
,	I-DATE
1940	I-DATE
,	O
a	O
campaign	O
preparation	O
order	O
to	O
attack	O
the	B-FAC
Zhengtai	I-FAC
Railway	I-FAC
,	O
jointly	O
signed	O
by	O
Zhu	B-PERSONNAME
De	I-PERSONNAME
,	O
Peng	B-PERSONNAME
Dehuai	I-PERSONNAME
,	O
and	O
Zuo	B-PERSONNAME
Quan	I-PERSONNAME
,	O
was	O
sent	O
to	O
Yan'an	B-GPE
and	O
all	O
units	O
of	O
the	B-ORGANIZATION
Eighth	I-ORGANIZATION
Route	I-ORGANIZATION
Army	I-ORGANIZATION
.	O

What	O
was	O
the	O
,	O
purpose	O
and	O
goal	O
of	O
this	O
campaign	O
?	O
?	O
?	O
?	O

It	O
was	O
to	O
break	O
through	O
the	O
Japanese	B-NORP
army	O
's	O
siege	O
policy	O
against	O
base	O
areas	O
behind	O
enemy	O
lines	O
,	O
and	O
to	O
avert	O
the	O
crisis	O
of	O
China	B-GPE
's	O
compromise	O
and	O
surrender	O
.	O

It	O
was	O
to	O
overcome	O
this	O
crisis	O
.	O

Well	O
,	O
the	B-EVENT
Hundred	I-EVENT
Regiments	I-EVENT
Offensive	I-EVENT
was	O
divided	O
into	O
three	B-CARDINAL
phases	O
.	O

Beginning	O
from	O
August	B-DATE
20	I-DATE
,	O
from	O
August	B-DATE
20	I-DATE
to	I-DATE
September	I-DATE
10	I-DATE
,	O
the	O
main	O
purpose	O
of	O
the	O
...	O
.	O

