Gee, i passed it finally.

Dear lily shen
LPI ID:XXXXXXXX

Congratulations on obtaining your LPIC-1 certification and joining the
world's largest community of Linux and Open Source professionals.
LPIC-1 is globally recognized as the leading entry-level certification
in Linux skills and knowledge.

In completing your LPIC-1 certification you are also eligible to take
our LPIC-2 exams. We encourage you to consider pursuing this higher level
certification.

it was not very difficult, i am planning to pass the level 2 soon. anybody has study material for level 2 to share?