What the purpose of preparing the following for the "initial opening of door for the 1st time". And what do we do with it after 3 days?

- cotton wool, water& a dish for germinating the Green deans & place in the middle of the living room?

It is SYMBOLIC of "GROWTH".

The picture, in this link shows how this household did the procedure:-

http://forum.geomancy.net/phpforum/article.php?bid=2&fid=19&mid=22648&new=

Isn't the tray with the green beans which turned into bean sprouts, lovely?

Please note that these are vegetables. And usually can last a week. Thus, if the green beans does not sprout like in the picture:

1.1 Make sure that it is placed in a location where there is light. As light and water is needed for germination.

1.2 Even after three days, you can still add some water.

1.3 Once it grows until as lovely as the picture, time to throw it away!

1.4. As vegetables are unlike plants where they don't strive for too long! But goodness me, please don't cut it or remove it and fry Char Kway Teow (Hokien Fried Mee ) with it, please!!!